Description
A classic Stack-based buffer overflow exists in the zmLoadUser() function in zm_user.cpp of the zmu binary in ZoneMinder through 1.32.3, allowing an unauthenticated attacker to execute code via a long username.
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 | zoneminder | 1.32.3-2 | — |
| Debian 13 | zoneminder | 1.32.3-2 | — |
| Debian 12 | zoneminder | 1.32.3-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | zoneminder | 1.36.12+dfsg1-1ubuntu0.1~esm1 | USN-5889-1 |
| Ubuntu Pro 20.04 LTS | zoneminder | 1.32.3-2ubuntu2+esm1 | USN-5889-1 |
| Ubuntu Pro 16.04 LTS | zoneminder | 1.29.0+dfsg-1ubuntu2+esm1 | USN-5889-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | zoneminder | 1.36.7-r0 | — |
| Alpine v3.23 | zoneminder | 1.36.7-r0 | — |
| Alpine v3.22 | zoneminder | 1.36.7-r0 | — |
| Alpine v3.21 | zoneminder | 1.36.7-r0 | — |
| Alpine v3.20 | zoneminder | 1.36.7-r0 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | zoneminder | 1.36.7-r0 | — |
| Alpine v3.18 | zoneminder | 1.36.7-r0 | — |
| Alpine v3.17 | zoneminder | 1.36.7-r0 | — |
| Alpine v3.16 | zoneminder | 1.36.7-r0 | — |
| Alpine v3.15 | zoneminder | 1.36.7-r0 | — |
Advisories 1
- USN-5889-1 zoneminder vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026