Common Weakness Enumeration

CWE-134

Allowed

Use of Externally-Controlled Format String

Abstraction: Base · Status: Draft

The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

513 vulnerabilities reference this CWE, most recent first.

CVE-2022-24051 (GCVE-0-2022-24051)

Vulnerability from cvelistv5 – Published: 2022-02-18 19:51 – Updated: 2024-08-03 03:59
VLAI
Summary
MariaDB CONNECT Storage Engine Format String Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of MariaDB. Authentication is required to exploit this vulnerability. The specific flaw exists within the processing of SQL queries. The issue results from the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the service account. Was ZDI-CAN-16193.
CWE
  • CWE-134 - Use of Externally-Controlled Format String
Assigner
zdi
Impacted products
Vendor Product Version
MariaDB MariaDB Affected: 10.6.5
Create a notification for this product.
Credits
Anonymous
Show details on NVD website

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CVE-2022-3023 (GCVE-0-2022-3023)

Vulnerability from cvelistv5 – Published: 2022-11-04 00:00 – Updated: 2025-05-02 13:49
VLAI
Title
Use of Externally-Controlled Format String in pingcap/tidb
Summary
Use of Externally-Controlled Format String in GitHub repository pingcap/tidb prior to 6.4.0, 6.1.3.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-134 - Use of Externally-Controlled Format String
Assigner
Impacted products
Vendor Product Version
pingcap pingcap/tidb Affected: unspecified , < 6.4.0, 6.1.3 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2022-2652 (GCVE-0-2022-2652)

Vulnerability from cvelistv5 – Published: 2022-08-04 09:35 – Updated: 2024-08-03 00:46
VLAI
Title
Use of Externally-Controlled Format String in umlaeute/v4l2loopback
Summary
Depending on the way the format strings in the card label are crafted it's possible to leak kernel stack memory. There is also the possibility for DoS due to the v4l2loopback kernel module crashing when providing the card label on request (reproduce e.g. with many %s modifiers in a row).
CWE
  • CWE-134 - Use of Externally-Controlled Format String
Assigner
References
Impacted products
Vendor Product Version
umlaeute umlaeute/v4l2loopback Affected: unspecified , < 0.12.6 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2022-1215 (GCVE-0-2022-1215)

Vulnerability from cvelistv5 – Published: 2022-05-31 00:00 – Updated: 2024-08-02 23:55
VLAI
Summary
A format string vulnerability was found in libinput
Severity
No CVSS data available.
CWE
Assigner
Impacted products
Vendor Product Version
n/a libinput Affected: libinput 1.10 and above
Show details on NVD website

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CVE-2021-41193 (GCVE-0-2021-41193)

Vulnerability from cvelistv5 – Published: 2022-03-01 18:25 – Updated: 2025-04-23 18:59
VLAI
Title
Use of Externally-Controlled Format String in wire-avs
Summary
wire-avs is the audio visual signaling (AVS) component of Wire, an open-source messenger. A remote format string vulnerability in versions prior to 7.1.12 allows an attacker to cause a denial of service or possibly execute arbitrary code. The issue has been fixed in wire-avs 7.1.12. There are currently no known workarounds.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-134 - Use of Externally-Controlled Format String
Assigner
References
Impacted products
Vendor Product Version
wireapp wire-avs Affected: < 7.1.12
Create a notification for this product.
Show details on NVD website

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CVE-2021-34970 (GCVE-0-2021-34970)

Vulnerability from cvelistv5 – Published: 2024-05-07 22:54 – Updated: 2024-08-04 00:26
VLAI
Title
Foxit PDF Reader print Method Use of Externally-Controlled Format String Information Disclosure Vulnerability
Summary
Foxit PDF Reader print Method Use of Externally-Controlled Format String Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the implementation of the print method. The issue results from the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-14849.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-134 - Use of Externally-Controlled Format String
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.1.49938
Create a notification for this product.
foxit pdf_reader Affected: - , ≤ 11.0.1.49938 (custom)
    cpe:2.3:a:foxit:pdf_reader:-:*:*:*:*:*:*:*
Create a notification for this product.
foxit pdf_editor Affected: - , ≤ 10.1.5.37672 (custom)
    cpe:2.3:a:foxit:pdf_editor:-:*:*:*:*:*:*:*
Create a notification for this product.
foxit pdf_editor Affected: 11.0.1.49938
    cpe:2.3:a:foxit:pdf_editor:11.0.1.49938:*:*:*:*:*:*:*
Create a notification for this product.
foxit pdf_editor Affected: 11.0.0.49893
    cpe:2.3:a:foxit:pdf_editor:11.0.0.49893:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2021-10-15 12:36
Show details on NVD website

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CVE-2021-33535 (GCVE-0-2021-33535)

Vulnerability from cvelistv5 – Published: 2021-06-25 18:26 – Updated: 2024-09-17 01:15
VLAI
Title
WEIDMUELLER: WLAN devices affected by exploitable format string vulnerability
Summary
In Weidmueller Industrial WLAN devices in multiple versions an exploitable format string vulnerability exists in the iw_console conio_writestr functionality. A specially crafted time server entry can cause an overflow of the time server buffer, resulting in remote code execution. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.
CWE
  • CWE-134 - Use of Externally-Controlled Format String
Assigner
References
Impacted products
Vendor Product Version
Weidmüller IE-WL(T)-BL-AP-CL-XX Affected: IE-WL-BL-AP-CL-EU (2536600000) , ≤ V1.16.18 (Build 18081617) (custom)
Affected: IE-WLT-BL-AP-CL-EU (2536650000) , ≤ V1.16.18 (Build 18081617) (custom)
Affected: IE-WL-BL-AP-CL-US (2536660000) , ≤ V1.16.18 (Build 18081617) (custom)
Affected: IE-WLT-BL-AP-CL-US (2536670000) , ≤ V1.16.18 (Build 18081617) (custom)
Create a notification for this product.
Weidmüller IE-WL(T)-VL-AP-CL-XX Affected: IE-WL-VL-AP-BR-CL-EU (2536680000) , ≤ V1.11.10 (Build 18122616) (custom)
Affected: IE-WLT-VL-AP-BR-CL-EU (2536690000) , ≤ V1.11.10 (Build 18122616) (custom)
Affected: IE-WL-VL-AP-BR-CL-US (2536700000) , ≤ V1.11.10 (Build 18122616) (custom)
Affected: IE-WLT-VL-AP-BR-CL-US (2536710000) , ≤ V1.11.10 (Build 18122616) (custom)
Create a notification for this product.
Date Public
2021-06-23 00:00
Show details on NVD website

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CVE-2021-32785 (GCVE-0-2021-32785)

Vulnerability from cvelistv5 – Published: 2021-07-22 00:00 – Updated: 2024-08-03 23:33
VLAI
Title
Format string bug in the Redis cache implementation
Summary
mod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. When mod_auth_openidc versions prior to 2.4.9 are configured to use an unencrypted Redis cache (`OIDCCacheEncrypt off`, `OIDCSessionType server-cache`, `OIDCCacheType redis`), `mod_auth_openidc` wrongly performed argument interpolation before passing Redis requests to `hiredis`, which would perform it again and lead to an uncontrolled format string bug. Initial assessment shows that this bug does not appear to allow gaining arbitrary code execution, but can reliably provoke a denial of service by repeatedly crashing the Apache workers. This bug has been corrected in version 2.4.9 by performing argument interpolation only once, using the `hiredis` API. As a workaround, this vulnerability can be mitigated by setting `OIDCCacheEncrypt` to `on`, as cache keys are cryptographically hashed before use when this option is enabled.
CWE
  • CWE-134 - Use of Externally-Controlled Format String
Assigner
Impacted products
Show details on NVD website

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CVE-2021-20307 (GCVE-0-2021-20307)

Vulnerability from cvelistv5 – Published: 2021-04-05 21:34 – Updated: 2024-08-03 17:37
VLAI
Summary
Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a libpano13 Affected: libpano13 2.9.20_rc3
Show details on NVD website

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CVE-2020-15634 (GCVE-0-2020-15634)

Vulnerability from cvelistv5 – Published: 2020-08-19 20:55 – Updated: 2024-08-04 13:22
VLAI
Summary
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 routers with firmware 1.0.4.84_10.0.58. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of string table file uploads. The issue results from the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this vulnerability to execute code in the context of the web server. Was ZDI-CAN-9755.
CWE
  • CWE-134 - Use of Externally-Controlled Format String
Assigner
zdi
References
Impacted products
Vendor Product Version
NETGEAR R6700 Affected: 1.0.4.84_10.0.58
Create a notification for this product.
Credits
d4rkn3ss from VNPT ISC
Show details on NVD website

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Mitigation
Requirements

Choose a language that is not subject to this flaw.

Mitigation
Implementation

Ensure that all format string functions are passed a static string which cannot be controlled by the user, and that the proper number of arguments are always sent to that function as well. If at all possible, use functions that do not support the %n operator in format strings. [REF-116] [REF-117]

Mitigation
Build and Compilation

Run compilers and linkers with high warning levels, since they may detect incorrect usage.

CAPEC-135: Format String Injection

An adversary includes formatting characters in a string input field on the target application. Most applications assume that users will provide static text and may respond unpredictably to the presence of formatting character. For example, in certain functions of the C programming languages such as printf, the formatting character %s will print the contents of a memory location expecting this location to identify a string and the formatting character %n prints the number of DWORD written in the memory. An adversary can use this to read or write to memory locations or files, or simply to manipulate the value of the resulting text in unexpected ways. Reading or writing memory may result in program crashes and writing memory could result in the execution of arbitrary code if the adversary can write to the program stack.

CAPEC-67: String Format Overflow in syslog()

This attack targets applications and software that uses the syslog() function insecurely. If an application does not explicitely use a format string parameter in a call to syslog(), user input can be placed in the format string parameter leading to a format string injection attack. Adversaries can then inject malicious format string commands into the function call leading to a buffer overflow. There are many reported software vulnerabilities with the root cause being a misuse of the syslog() function.