Summary
USN-5638-1 fixed a vulnerability in Expat. This update provides
the corresponding updates for Ubuntu 16.04 ESM, Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-43680)
This update also fixes a minor regression introduced in
Ubuntu 18.04 LTS.
We apologize for the inconvenience.
Original advisory details:
Rhodri James discovered that Expat incorrectly handled memory when
processing certain malformed XML files. An attacker could possibly
use this issue to cause a crash or execute arbitrary code.
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | expat | 2.2.5-3ubuntu0.9 |
| Ubuntu · 20.04 LTS 20.04:LTS | expat | 2.2.9-1ubuntu0.6 |
| Ubuntu · 22.04 LTS 22.04:LTS | expat | 2.4.7-1ubuntu0.2 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | expat | 2.1.0-7ubuntu0.16.04.5+esm7 |
Vulnerabilities 1
-
High 7.5CVE-2022-43680 Public exploit
In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEnt…
References
-
report
https://ubuntu.com/security/CVE-2022-43680