Description
The client_host function in parsers.c in Privoxy before 3.0.24 allows remote attackers to cause a denial of service (invalid read and crash) via an empty HTTP Host 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 | privoxy | 3.0.24-1 | — |
| Debian 13 | privoxy | 3.0.24-1 | — |
| Debian 12 | privoxy | 3.0.24-1 | — |
| Debian 8 | privoxy | 3.0.21-7+deb8u1 | DSA-3460-1 |
| Debian 7 | privoxy | 3.0.19-2+deb7u3 | DSA-3460-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | privoxy | 3.0.16-1+deb6u2 | DLA-398-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | privoxy | 3.0.26-1.1 | openSUSE-SU-2024:10494-1 |
Advisories 3
- DLA-398-1 privoxy - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3460-1 privoxy - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10494-1 privoxy-3.0.26-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- DSA-3460 vendor-advisory
- [oss-security] 20160121 Re: CVE request for Privoxy 3.0.24 mailing-list
- [oss-security] 20160121 CVE request for Privoxy 3.0.24 mailing-list
- http://ijbswa.cvs.sourceforge.net/viewvc/ijbswa/current/parsers.c?r1=1.302&r2=1.303
- FEDORA-2016-bc7acd24c6 vendor-advisory
- FEDORA-2016-29995fbd42 vendor-advisory
- http://www.privoxy.org/announce.txt