RHSA-2026:9832
Vulnerability from csaf_redhat - Published: 2026-04-22 17:32 - Updated: 2026-04-23 06:09Summary
Red Hat Security Advisory: Insights proxy Container Image
Severity
Important
Notes
Topic: Initial GA Release of Red Hat Insights proxy
Details: The Insights proxy Container is used by the Insights proxy product RPM
and serves as an intermediary between cystomer systems in disconnected networks,
air-gapped systems or systems with no outside connections and Insights.
The Insights proxy routes all Red Hat Insights traffic through itself, providing
a layer of privary and security for disconnected customer systems.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archive_read_data() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives.
7.5 (High)
Vendor Fix
The Insights proxy container image provided here is downloaded by the Red Hat
Insights proxy product RPM.
Before applying this update, make sure all previously released errata relevant to
your system have been applied.
https://access.redhat.com/errata/RHSA-2026:9832
Workaround
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.
7.5 (High)
Vendor Fix
The Insights proxy container image provided here is downloaded by the Red Hat
Insights proxy product RPM.
Before applying this update, make sure all previously released errata relevant to
your system have been applied.
https://access.redhat.com/errata/RHSA-2026:9832
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.
7.5 (High)
Vendor Fix
The Insights proxy container image provided here is downloaded by the Red Hat
Insights proxy product RPM.
Before applying this update, make sure all previously released errata relevant to
your system have been applied.
https://access.redhat.com/errata/RHSA-2026:9832
Workaround
To mitigate this issue, avoid processing untrusted ISO9660 images with applications that utilize `libarchive`. Users should only extract or read content from ISO images obtained from trusted sources.
A flaw was found in Vim, an open source, command line text editor. This heap buffer overflow vulnerability exists in the tag file resolution logic when processing the 'helpfile' option. A local user could exploit this by providing a specially crafted 'helpfile' option value, leading to a heap buffer overflow. This could result in arbitrary code execution or a denial of service.
7.3 (High)
Vendor Fix
The Insights proxy container image provided here is downloaded by the Red Hat
Insights proxy product RPM.
Before applying this update, make sure all previously released errata relevant to
your system have been applied.
https://access.redhat.com/errata/RHSA-2026:9832
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
A flaw was found in nghttp2. Due to missing internal state validation, the library continues to process incoming data even after a session has been terminated. A remote attacker could exploit this by sending a specially crafted HTTP/2 frame, leading to an assertion failure and a denial of service (DoS).
7.5 (High)
Vendor Fix
The Insights proxy container image provided here is downloaded by the Red Hat
Insights proxy product RPM.
Before applying this update, make sure all previously released errata relevant to
your system have been applied.
https://access.redhat.com/errata/RHSA-2026:9832
A flaw was found in Vim, an open-source command-line text editor. Specifically, an operating system (OS) command injection vulnerability exists in the `netrw` standard plugin. A remote attacker could exploit this by tricking a user into opening a specially crafted URL, such as one using the `scp://` protocol handler. Successful exploitation allows the attacker to execute arbitrary shell commands with the same privileges as the Vim process, leading to potential system compromise.
4.4 (Medium)
Vendor Fix
The Insights proxy container image provided here is downloaded by the Red Hat
Insights proxy product RPM.
Before applying this update, make sure all previously released errata relevant to
your system have been applied.
https://access.redhat.com/errata/RHSA-2026:9832
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
A flaw was found in Vim. This vulnerability, a heap-buffer-overflow and a segmentation fault, exists in the swap file recovery logic. A local attacker could exploit this by providing a specially crafted swap file. This could lead to a denial of service (DoS) or potentially information disclosure.
5.3 (Medium)
Vendor Fix
The Insights proxy container image provided here is downloaded by the Red Hat
Insights proxy product RPM.
Before applying this update, make sure all previously released errata relevant to
your system have been applied.
https://access.redhat.com/errata/RHSA-2026:9832
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
A flaw was found in Vim. By including a newline character in a pattern passed to Vim's glob() function, an attacker may be able to execute arbitrary shell commands. This command injection vulnerability allows for arbitrary code execution, depending on the user's shell settings.
7.3 (High)
Vendor Fix
The Insights proxy container image provided here is downloaded by the Red Hat
Insights proxy product RPM.
Before applying this update, make sure all previously released errata relevant to
your system have been applied.
https://access.redhat.com/errata/RHSA-2026:9832
References
Acknowledgments
Elhanan Haenel
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"title": "Vulnerability description"
},
{
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"title": "Vulnerability summary"
},
{
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"text": "The Red Hat Product Security team would likely assess the severity of this vulnerability as High because it allows remote attackers to cause a persistent denial-of-service condition using a small crafted archive file. Successful exploitation requires no authentication, no special configuration, and no user interaction in environments that automatically process uploaded archives. By repeatedly submitting malicious archives, an attacker can exhaust CPU resources or worker threads in services such as file upload systems, CI/CD pipelines, mail scanners, and content indexing services that rely on libarchive for archive extraction.",
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"scores": [
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"details": "Important"
}
],
"title": "libarchive: Infinite Loop Denial of Service in RAR5 Decompression via archive_read_data() in libarchive"
},
{
"acknowledgments": [
{
"names": [
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]
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"cve": "CVE-2026-4424",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"discovery_date": "2026-03-19T12:22:21.740000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2449006"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libarchive: libarchive: Information disclosure via heap out-of-bounds read in RAR archive processing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "IMPORTANT: This heap out-of-bounds read vulnerability in libarchive\u0027s RAR archive processing logic can lead to information disclosure. A remote attacker can exploit this flaw by providing a specially crafted RAR archive, potentially revealing sensitive heap memory information without requiring authentication or user interaction on systems that process untrusted archives.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"title": "Vulnerability description"
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},
{
"category": "other",
"text": "Important: An integer overflow flaw in `libarchive` on 32-bit systems can lead to a heap buffer overflow. This vulnerability occurs when processing a specially crafted ISO9660 image, allowing an attacker to potentially execute arbitrary code. Red Hat Enterprise Linux 64-bit systems are not affected by this flaw.",
"title": "Statement"
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{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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},
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"title": "Statement"
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}
],
"release_date": "2026-02-27T21:54:35.196000+00:00",
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"date": "2026-04-22T17:32:43+00:00",
"details": "The Insights proxy container image provided here is downloaded by the Red Hat\nInsights proxy product RPM.\n\nBefore applying this update, make sure all previously released errata relevant to\nyour system have been applied.",
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"category": "none"
},
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},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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]
}
],
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{
"cvss_v3": {
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"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 4.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"products": [
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"title": "vim: Vim: Arbitrary code execution via OS command injection in the netrw plugin"
},
{
"cve": "CVE-2026-28421",
"cwe": {
"id": "CWE-120",
"name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
},
"discovery_date": "2026-02-27T23:01:44.673504+00:00",
"ids": [
{
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"text": "2443474"
}
],
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: Vim: Denial of service and information disclosure via crafted swap file",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The risk posed by this vulnerability is limited on Red Hat products due to user and system isolation features which are enabled by default. The impacts of this flaw will be limited by the active user\u0027s permissions and access control limits. Host systems are not at risk when following Red Hat guidelines and the root user account is not actively executing Vim.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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]
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"category": "self",
"summary": "Canonical URL",
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},
{
"category": "external",
"summary": "RHBZ#2443474",
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},
{
"category": "external",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28421"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/commit/65c1a143c331c886dc28",
"url": "https://github.com/vim/vim/commit/65c1a143c331c886dc28"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/releases/tag/v9.2.0077",
"url": "https://github.com/vim/vim/releases/tag/v9.2.0077"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-r2gw-2x48-jj5p",
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}
],
"release_date": "2026-02-27T22:06:34.312000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-04-22T17:32:43+00:00",
"details": "The Insights proxy container image provided here is downloaded by the Red Hat\nInsights proxy product RPM.\n\nBefore applying this update, make sure all previously released errata relevant to\nyour system have been applied.",
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"Red Hat Insights proxy 1.5:registry.redhat.io/insights-proxy/insights-proxy-container-rhel9@sha256:c2f5c9ccaaa7a8d1aef0ecb97a534a904510613ed2fb7c1e6b60400ae236f2d6_arm64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:9832"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
"product_ids": [
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"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
"version": "3.1"
},
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"threats": [
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"category": "impact",
"details": "Moderate"
}
],
"title": "vim: Vim: Denial of service and information disclosure via crafted swap file"
},
{
"cve": "CVE-2026-33412",
"cwe": {
"id": "CWE-78",
"name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
},
"discovery_date": "2026-03-24T20:02:21.511965+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
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}
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"title": "Vulnerability description"
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{
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},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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"threats": [
{
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"details": "Important"
}
],
"title": "vim: Vim: Arbitrary code execution via command injection in glob() function"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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