RHSA-2026:5459

Vulnerability from csaf_redhat - Published: 2026-03-23 16:21 - Updated: 2026-07-19 21:35
Summary
Red Hat Security Advisory: RHTAS 1.3.3 - Red Hat Trusted Artifact Signer Release
Severity
Important
Notes
Topic: The 1.3.3 release of Red Hat Trusted Artifact Signer OpenShift Operator. For more details please visit the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.3
Details: The RHTAS Operator can be used with OpenShift Container Platform 4.16, 4.17, 4.18, 4.19, 4.20 and 4.21
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.
CVE-2025-66471

A decompression handling flaw has been discovered in urllib3. When streaming a compressed response, urllib3 can perform decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd). The library must read compressed data from the network and decompress it until the requested chunk size is met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This can result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data; CWE-409) on the client side, even if the application only requested a small chunk of data.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuffer-rhel9@sha256:f30c3610c1c840ea8edb99c2679edb09768c45012979da1389605c6a54204292_amd64 —
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuftool-rhel9@sha256:cc2676a9d70599503faf8ca413e7bbc29cd523782a3d1e81bfc8f9e6323b4a28_amd64 —
Workaround
Threats
Impact Important
CVE-2026-3336

A flaw was found in aws-lc, a cryptographic library. An unauthenticated attacker can exploit improper certificate validation within the `PKCS7_verify()` function. This allows them to bypass the verification process for certificate chains when handling PKCS7 objects that contain multiple digital signers, except for the last one. The primary consequence is a compromise of integrity, as the system may incorrectly trust unverified certificates.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-295 - Improper Certificate Validation
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuffer-rhel9@sha256:f30c3610c1c840ea8edb99c2679edb09768c45012979da1389605c6a54204292_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuftool-rhel9@sha256:cc2676a9d70599503faf8ca413e7bbc29cd523782a3d1e81bfc8f9e6323b4a28_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-3338

A flaw was found in AWS-LC. An unauthenticated user can bypass signature verification when processing PKCS7 objects with Authenticated Attributes due to improper signature validation in the PKCS7_verify() function. This vulnerability allows an attacker to potentially compromise the integrity of signed data.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-347 - Improper Verification of Cryptographic Signature
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuffer-rhel9@sha256:f30c3610c1c840ea8edb99c2679edb09768c45012979da1389605c6a54204292_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuftool-rhel9@sha256:cc2676a9d70599503faf8ca413e7bbc29cd523782a3d1e81bfc8f9e6323b4a28_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-21441

urllib3 is an HTTP client library for Python. urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. urllib3 can perform decoding or decompression based on the HTTP `Content-Encoding` header (e.g., `gzip`, `deflate`, `br`, or `zstd`). When using the streaming API, the library decompresses only the necessary bytes, enabling partial content consumption. Starting in version 1.22 and prior to version 2.6.3, for HTTP redirect responses, the library would read the entire response body to drain the connection and decompress the content unnecessarily. This decompression occurred even before any read methods were called, and configured read limits did not restrict the amount of decompressed data. As a result, there was no safeguard against decompression bombs. A malicious server could exploit this to trigger excessive resource consumption on the client. Applications and libraries are affected when they stream content from untrusted sources by setting `preload_content=False` when they do not disable redirects. Users should upgrade to at least urllib3 v2.6.3, in which the library does not decode content of redirect responses when `preload_content=False`. If upgrading is not immediately possible, disable redirects by setting `redirect=False` for requests to untrusted source.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuftool-rhel9@sha256:cc2676a9d70599503faf8ca413e7bbc29cd523782a3d1e81bfc8f9e6323b4a28_amd64 —
Vendor Fix fix
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuffer-rhel9@sha256:f30c3610c1c840ea8edb99c2679edb09768c45012979da1389605c6a54204292_amd64 —
Threats
Impact Important
CVE-2026-31812

A flaw was found in quinn-proto, a pure-Rust implementation of the IETF QUIC transport protocol. A remote, unauthenticated attacker can trigger a denial of service in applications using vulnerable quinn versions by sending a crafted QUIC Initial packet containing malformed quic_transport_parameters. In quinn-proto parsing logic, attacker-controlled varints are decoded with unwrap(), so truncated encodings cause Err(UnexpectedEnd) and panic. This is reachable over the network with a single packet and no prior trust or authentication.

5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-248 - Uncaught Exception
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuffer-rhel9@sha256:f30c3610c1c840ea8edb99c2679edb09768c45012979da1389605c6a54204292_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuftool-rhel9@sha256:cc2676a9d70599503faf8ca413e7bbc29cd523782a3d1e81bfc8f9e6323b4a28_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:5459 self
https://access.redhat.com/documentation/en-us/red… external
https://access.redhat.com/documentation/en-us/red… external
https://access.redhat.com/security/cve/CVE-2025-66471 external
https://access.redhat.com/security/cve/CVE-2026-21441 external
https://access.redhat.com/security/cve/CVE-2026-31812 external
https://access.redhat.com/security/cve/CVE-2026-3336 external
https://access.redhat.com/security/cve/CVE-2026-3338 external
https://access.redhat.com/security/updates/classi… external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2025-66471 self
https://bugzilla.redhat.com/show_bug.cgi?id=2419467 external
https://www.cve.org/CVERecord?id=CVE-2025-66471 external
https://nvd.nist.gov/vuln/detail/CVE-2025-66471 external
https://github.com/urllib3/urllib3/commit/c19571d… external
https://github.com/urllib3/urllib3/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-3336 self
https://bugzilla.redhat.com/show_bug.cgi?id=2444026 external
https://www.cve.org/CVERecord?id=CVE-2026-3336 external
https://nvd.nist.gov/vuln/detail/CVE-2026-3336 external
https://aws.amazon.com/security/security-bulletin… external
https://github.com/aws/aws-lc/releases/tag/v1.69.0 external
https://access.redhat.com/security/cve/CVE-2026-3338 self
https://bugzilla.redhat.com/show_bug.cgi?id=2444025 external
https://www.cve.org/CVERecord?id=CVE-2026-3338 external
https://nvd.nist.gov/vuln/detail/CVE-2026-3338 external
https://access.redhat.com/security/cve/CVE-2026-21441 self
https://bugzilla.redhat.com/show_bug.cgi?id=2427726 external
https://www.cve.org/CVERecord?id=CVE-2026-21441 external
https://nvd.nist.gov/vuln/detail/CVE-2026-21441 external
https://github.com/urllib3/urllib3/commit/8864ac4… external
https://github.com/urllib3/urllib3/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-31812 self
https://bugzilla.redhat.com/show_bug.cgi?id=2446330 external
https://www.cve.org/CVERecord?id=CVE-2026-31812 external
https://nvd.nist.gov/vuln/detail/CVE-2026-31812 external
https://github.com/quinn-rs/quinn/security/adviso… external
To clipboard 

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          "title": "Vulnerability description"
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          "title": "CVSS score applicability"
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          "summary": "https://aws.amazon.com/security/security-bulletins/2026-005-AWS/",
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          "title": "Vulnerability description"
        },
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        {
          "category": "description",
          "text": "A flaw was found in quinn-proto, a pure-Rust implementation of the IETF QUIC transport protocol. A remote, unauthenticated attacker can trigger a denial of service in applications using vulnerable quinn versions by sending a crafted QUIC Initial packet containing malformed quic_transport_parameters. In quinn-proto parsing logic, attacker-controlled varints are decoded with unwrap(), so truncated encodings cause Err(UnexpectedEnd) and panic. This is reachable over the network with a single packet and no prior trust or authentication.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "quinn-proto: quinn-proto: Denial of Service via crafted QUIC Initial packet",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The availability impact of this flaw is limited to specific services on Red Hat systems. Host system availability is not at risk.",
          "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": {
        "fixed": [
          "Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuffer-rhel9@sha256:f30c3610c1c840ea8edb99c2679edb09768c45012979da1389605c6a54204292_amd64",
          "Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuftool-rhel9@sha256:cc2676a9d70599503faf8ca413e7bbc29cd523782a3d1e81bfc8f9e6323b4a28_amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-31812"
        },
        {
          "category": "external",
          "summary": "RHBZ#2446330",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2446330"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-31812",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-31812"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-31812",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31812"
        },
        {
          "category": "external",
          "summary": "https://github.com/quinn-rs/quinn/security/advisories/GHSA-6xvm-j4wr-6v98",
          "url": "https://github.com/quinn-rs/quinn/security/advisories/GHSA-6xvm-j4wr-6v98"
        }
      ],
      "release_date": "2026-03-10T21:04:36.812000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-03-23T16:21:50+00:00",
          "details": "Red Hat Trusted Artifact Signer simplifies cryptographic signing and verifying of software artifacts such as container images, binaries and source code changes. It is a self-managed on-premise deployment of the Sigstore project available at https://sigstore.dev\n\nPlatform Engineers, Software Developers and Security Professionals may use RHTAS to ensure the integrity, transparency and assurance of their organization\u0027s software supply chain.\n\nFor details on using the operator, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.3\n\nYou can find the release notes for this version of Red Hat Trusted Artifact Signer at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.3/html-single/release_notes/index",
          "product_ids": [
            "Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuffer-rhel9@sha256:f30c3610c1c840ea8edb99c2679edb09768c45012979da1389605c6a54204292_amd64",
            "Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuftool-rhel9@sha256:cc2676a9d70599503faf8ca413e7bbc29cd523782a3d1e81bfc8f9e6323b4a28_amd64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:5459"
        },
        {
          "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": [
            "Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuffer-rhel9@sha256:f30c3610c1c840ea8edb99c2679edb09768c45012979da1389605c6a54204292_amd64",
            "Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuftool-rhel9@sha256:cc2676a9d70599503faf8ca413e7bbc29cd523782a3d1e81bfc8f9e6323b4a28_amd64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "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:L",
            "version": "3.1"
          },
          "products": [
            "Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuffer-rhel9@sha256:f30c3610c1c840ea8edb99c2679edb09768c45012979da1389605c6a54204292_amd64",
            "Red Hat Trusted Artifact Signer 1.3:registry.redhat.io/rhtas/tuftool-rhel9@sha256:cc2676a9d70599503faf8ca413e7bbc29cd523782a3d1e81bfc8f9e6323b4a28_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "quinn-proto: quinn-proto: Denial of Service via crafted QUIC Initial packet"
    }
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Detection rules are retrieved from Rulezet.