Description
mod_auth in lighttpd before 1.4.36 allows remote attackers to inject arbitrary log entries via a basic HTTP authentication string without a colon character, as demonstrated by a string containing a NULL and new line character.
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 | lighttpd | 1.4.37-1 | — |
| Debian 13 | lighttpd | 1.4.37-1 | — |
| Debian 12 | lighttpd | 1.4.37-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | lighttpd | 1.4.45-1ubuntu3.18.04.1+esm1 | USN-4775-1 |
| Ubuntu Pro 16.04 LTS | lighttpd | 1.4.35-4ubuntu2.1+esm1 | USN-4775-1 |
| Ubuntu Pro 14.04 LTS | lighttpd | 1.4.33-1+nmu2ubuntu2.1+esm1 | USN-4775-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | lighttpd | 1.4.35-3.1 | SUSE-SU-2017:0728-1 |
| SLES 12 SP1 | lighttpd | 1.4.35-3.1 | SUSE-SU-2017:0728-1 |
| SLES 11 SP4 | lighttpd | 1.4.20-2.58.1 | SUSE-SU-2017:0731-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | lighttpd | 1.4.35-3.1 | SUSE-SU-2017:0728-1 |
| SLES for SAP 11 SP4 | lighttpd | 1.4.20-2.58.1 | SUSE-SU-2017:0731-1 |
Advisories 3
- USN-4775-1 lighttpd vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- SUSE-SU-2017:0728-1 Security update for lighttpd SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0731-1 Security update for lighttpd SUSE / openSUSE Security Updates · May 2, 2025
References
- 74813 vdb-entry
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05247375
- http://redmine.lighttpd.net/issues/2646
- 1032405 vdb-entry
- FEDORA-2015-12252 vendor-advisory
- FEDORA-2015-12250 vendor-advisory
- http://jaanuskp.blogspot.com/2015/05/cve-2015-3200.html
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
- https://kc.mcafee.com/corporate/index?page=content&id=SB10310