Description
A flaw, similar to to CVE-2016-9646, exists in ikiwiki before 3.20170111, in the passwordauth plugin's use of CGI::FormBuilder, allowing an attacker to bypass authentication via repeated parameters.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ikiwiki | ikiwiki | before 3.20170111 | — |
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 | ikiwiki | 3.20170111 | — |
| Debian 13 | ikiwiki | 3.20170111 | — |
| Debian 12 | ikiwiki | 3.20170111 | — |
| Debian 8 | ikiwiki | 3.20141016.4 | DSA-3760-1 |
| Debian 7 | ikiwiki | 3.20120629.2+deb7u2 | DLA-812-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | ikiwiki | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | ikiwiki | 3.20200202.3-2.7 | openSUSE-SU-2024:10860-1 |
Advisories 3
- DLA-812-1 ikiwiki - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3760-1 ikiwiki - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10860-1 ikiwiki-3.20200202.3-2.7 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- DSA-3760 vendor-advisory
- https://ikiwiki.info/security/#cve-2017-0356
- [oss-security] 20170112 ikiwiki: CVE-2017-0356: Authentication bypass via repeated parameters mailing-list
- 95420 vdb-entry