Description
A directory traversal flaw in SquirrelMail 1.4.22 allows an authenticated attacker to exfiltrate (or potentially delete) files from the hosting server, related to ../ in the att_local_name field in Deliver.class.php.
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 8 | squirrelmail | 2:1.4.23~svn20120406-2+deb8u2 | DSA-4168-1 |
| Debian 7 | squirrelmail | 2:1.4.23~svn20120406-2+deb7u2 | DLA-1344-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | squirrelmail | 2:1.4.23~svn20120406-2+deb8u3ubuntu0.16.04.1 | — |
Advisories 2
- DSA-4168-1 squirrelmail - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1344-1 squirrelmail - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://www.openwall.com/lists/oss-security/2018/03/17/2
- https://gist.github.com/hannob/3c4f86863c418930ad08853c1109364e
- 1040554 vdb-entry
- DSA-4168 vendor-advisory
- https://insinuator.net/2018/03/squirrelmail-full-disclosure-troopers18/
- https://paste.pound-python.org/show/OjSLiFTxiBrTk63jqEUu/
- [debian-lts-announce] 20180416 [SECURITY] [DLA 1344-1] squirrelmail security update mailing-list
- FEDORA-2019-ad02f64a79 vendor-advisory
- FEDORA-2019-1a87523729 vendor-advisory