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TI-2012-02456 Aliases CVE-2012-2840GHSA-7r47-9m3f-8mp5

Off-by-one error in the exif_convert_utf16_to_utf8 function in exif-entry.c in the EXIF…

Priority MEDIUM 41CWE-189Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-189 and the CVSS impact.

Summary

Off-by-one error in the exif_convert_utf16_to_utf8 function in exif-entry.c in the EXIF Tag Parsing Library (aka libexif) before 0.6.21 allows remote attackers to cause a denial of service or possibly execute arbitrary code via crafted EXIF tags in an image.

Why it matters now

EPSS 0.05057 92nd percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:libexif_project:libexif:*:*:*:*:*:*:*:*up to 0.6.20Vulnerablelibexif project
cpe:2.3:a:libexif_project:libexif:0.6.14:*:*:*:*:*:*:*0.6.14Vulnerablelibexif project
cpe:2.3:a:libexif_project:libexif:0.6.15:*:*:*:*:*:*:*0.6.15Vulnerablelibexif project
cpe:2.3:a:libexif_project:libexif:0.6.16:*:*:*:*:*:*:*0.6.16Vulnerablelibexif project
cpe:2.3:a:libexif_project:libexif:0.6.18:*:*:*:*:*:*:*0.6.18Vulnerablelibexif project
cpe:2.3:a:libexif_project:libexif:0.6.19:*:*:*:*:*:*:*0.6.19Vulnerablelibexif project
  • cpe:2.3:a:libexif_project:libexif:*:*:*:*:*:*:*:* Versions up to 0.6.20 Vulnerable ·libexif project
  • cpe:2.3:a:libexif_project:libexif:0.6.14:*:*:*:*:*:*:* Versions 0.6.14 Vulnerable ·libexif project
  • cpe:2.3:a:libexif_project:libexif:0.6.15:*:*:*:*:*:*:* Versions 0.6.15 Vulnerable ·libexif project
  • cpe:2.3:a:libexif_project:libexif:0.6.16:*:*:*:*:*:*:* Versions 0.6.16 Vulnerable ·libexif project
  • cpe:2.3:a:libexif_project:libexif:0.6.18:*:*:*:*:*:*:* Versions 0.6.18 Vulnerable ·libexif project
  • cpe:2.3:a:libexif_project:libexif:0.6.19:*:*:*:*:*:*:* Versions 0.6.19 Vulnerable ·libexif project

Remediation

Red Hat 1 advisory

  • RHSA-2012:1255 Released 2012-09-11 · Red Hat rating Moderate
    libexif security update
    • RHEL Desktop Workstation (v. 5 client) libexif-0.6.21-1.el5_8, libexif-devel-0.6.21-1.el5_8, libexif-devel-0.6.21-1.el5_8.i386
    • Red Hat Enterprise Linux (v. 5 server) libexif-0.6.21-1.el5_8, libexif-0.6.21-1.el5_8.i386, libexif-0.6.21-1.el5_8.ia64 +5
    • Red Hat Enterprise Linux Desktop (v. 5 client) libexif-0.6.21-1.el5_8, libexif-0.6.21-1.el5_8.i386
    • Red Hat Enterprise Linux Desktop (v. 6) libexif-0.6.21-5.el6_3
    • Red Hat Enterprise Linux Desktop Optional (v. 6) libexif-0.6.21-5.el6_3, libexif-devel-0.6.21-5.el6_3
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) libexif-0.6.21-5.el6_3, libexif-devel-0.6.21-5.el6_3
    • Red Hat Enterprise Linux Server (v. 6) libexif-0.6.21-5.el6_3, libexif-0.6.21-5.el6_3.ppc, libexif-devel-0.6.21-5.el6_3 +1
    • Red Hat Enterprise Linux Workstation (v. 6) libexif-0.6.21-5.el6_3, libexif-devel-0.6.21-5.el6_3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
RHEL Desktop Workstation (v. 5 client)Fixed RHSA-2012:1255
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2012:1255
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2012:1255
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2012:1255
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2012:1255
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2012:1255
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2012:1255
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2012:1255

Timeline

  1. 2026-10-02 Threatist record created from CVE-2012-2840
  2. 2026-10-03 Alias added: GHSA-7r47-9m3f-8mp5

References

Advisory 4

Other 1

  • TI-2026-25264 Integer underflow in libexif CVSS 3.1HIGH 7.8
  • TI-2017-05185 Out-of-bounds read in Red Hat libexif CVSS 3.0CRITICAL 9.1
  • TI-2020-10306 An issue was discovered in libexif before 0.6.22. CVSS 3.1CRITICAL 9.1
  • TI-2012-02433 Buffer overflow in the exif_entry_format_value function in exif-entry.c in the EXIF Tag… CVSS 2.0HIGH 7.5
  • TI-2012-02457 Integer underflow in the exif_entry_get_value function in exif-entry.c in the EXIF Tag… CVSS 2.0HIGH 7.5
  • TI-2020-00193 Integer overflow in Android CVSS 3.1HIGH 7.5
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences