Vulnerability CVE-2023-6857: Information

Description

When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary. *This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected.* This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

Severity: MEDIUM (5.3) Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

URL: https://nvd.nist.gov/vuln/detail/CVE-2023-6857
Published: Dec. 19, 2023
Modified: Feb. 2, 2024
Error type identifier: CWE-362

Fixed packages

Package name
Branch
Fixed in version
Version from repository
Errata ID
Task #
State
firefoxsisyphus121.0-alt1125.0.3-alt1ALT-PU-2023-8231-1336902Fixed
firefoxsisyphus_riscv64121.0-alt0.port124.0.1-alt0.portALT-PU-2023-8323-1-Fixed
firefoxsisyphus_loongarch64121.0-alt1.0.port125.0.2-alt1.0.portALT-PU-2024-1013-1-Fixed
firefox-esrsisyphus115.6.0-alt1115.10.0-alt1ALT-PU-2023-8216-2336858Fixed
firefox-esrsisyphus_loongarch64115.6.0-alt1115.10.0-alt1ALT-PU-2023-8248-1-Fixed
firefox-esrp10115.6.0-alt1115.10.0-alt1ALT-PU-2023-8227-2336859Fixed
firefox-esrc10f1115.8.0-alt0.c10.1115.9.1-alt0.c10.1ALT-PU-2024-3614-2340631Fixed
thunderbirdsisyphus115.6.0-alt1115.9.0-alt1ALT-PU-2023-8368-2337340Fixed
thunderbirdsisyphus_loongarch64115.6.0-alt1115.9.0-alt1ALT-PU-2023-8387-1-Fixed
thunderbirdp10115.8.1-alt1115.9.0-alt1ALT-PU-2024-3860-2342581Fixed
thunderbirdc10f1115.8.1-alt0.c10.1115.9.0-alt0.c10.1ALT-PU-2024-4748-2343092Fixed

References to Advisories, Solutions, and Tools

Hyperlink
Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1796023
  • Issue Tracking
  • Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-54/
  • Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-55/
  • Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-56/
  • Vendor Advisory
https://www.debian.org/security/2023/dsa-5581
  • Third Party Advisory
https://www.debian.org/security/2023/dsa-5582
  • Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
  • Mailing List
  • Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
  • Mailing List
  • Third Party Advisory
https://security.gentoo.org/glsa/202401-10
  • Third Party Advisory

    1. Configuration 1

      cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
      cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
      cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
      Running on/with:
      cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
      Running on/with:
      cpe:2.3:o:google:android:-:*:*:*:*:*:*:*
      Running on/with:
      cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

      Configuration 2

      cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
      cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
      cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
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