Description
htp_parse_authorization_digest in htp_parsers.c in LibHTP 0.5.26 allows remote attackers to cause a heap-based buffer over-read via an authorization digest header.
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 | suricata | 1:4.0.0-1 | — |
| Debian 13 | libhtp | 1:0.5.28-1 | — |
| Debian 13 | suricata | 1:4.0.0-1 | — |
| Debian 12 | libhtp | 1:0.5.28-1 | — |
| Debian 8 | suricata | 2.0.7-2+deb8u4 | DLA-1751-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | htp | No fix yet | — |
| Ubuntu 26.04 LTS | htp | No fix yet | — |
| Ubuntu 25.10 | htp | No fix yet | — |
| Ubuntu 24.04 LTS | htp | No fix yet | — |
| Ubuntu 22.04 LTS | htp | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | htp | No fix yet | — |
| Ubuntu 18.04 LTS | htp +1 | No fix yet | — |
| Ubuntu 16.04 LTS | htp +1 | No fix yet | — |
Advisories 1
- DLA-1751-1 suricata - security update Debian Security (DSA / DLA) · Mar 9, 2026