Description
Apache mod_auth_radius 1.5.4 and libpam-radius-auth allow remote malicious RADIUS servers to cause a denial of service (crash) via a RADIUS_REPLY_MESSAGE with a RADIUS attribute length of 1, which leads to a memcpy operation with a -1 length argument.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libpam-radius-auth | 1.3.16-3 | — |
| Debian 13 | libpam-radius-auth | 1.3.16-3 | — |
| Debian 12 | libpam-radius-auth | 1.3.16-3 | — |
| Debian 3.0 | libpam-radius-auth | 1.3.14-1.3 | DSA-659-1 |
Advisories 1
- DSA-659-1 libpam-radius-auth - information leak, integer underflow Debian Security (DSA / DLA) · Mar 9, 2026
References
- 20050111 Apache mod_auth_radius remote integer overflow mailing-list
- modauthradius-dos(18841) vdb-entry
- 14046 third-party-advisory
- 1012829 vdb-entry
- DSA-659 vendor-advisory
- 13773 third-party-advisory
- http://security.lss.hr/en/index.php?page=details&ID=LSS-2005-01-02
- 12217 vdb-entry