USN-6515-1: Thunderbird vulnerabilities
27 November 2023
Several security issues were fixed in Thunderbird.
Releases
Packages
- thunderbird - Mozilla Open Source mail and newsgroup client
Details
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code. (CVE-2023-6206, CVE-2023-6212)
It was discovered that Thudnerbird did not properly manage memory when
images were created on the canvas element. An attacker could potentially
exploit this issue to obtain sensitive information. (CVE-2023-6204)
It discovered that Thunderbird incorrectly handled certain memory when
using a MessagePort. An attacker could potentially exploit this issue to
cause a denial of service. (CVE-2023-6205)
It discovered that Thunderbird incorrectly did not properly manage ownership
in ReadableByteStreams. An attacker could potentially exploit this issue
to cause a denial of service. (CVE-2023-6207)
It discovered that Thudnerbird incorrectly did not properly manage copy
operations when using Selection API in X11. An attacker could potentially
exploit this issue to obtain sensitive information. (CVE-2023-6208)
Rachmat Abdul Rokhim discovered that Thunderbird incorrectly handled
parsing of relative URLS starting with "///". An attacker could potentially
exploit this issue to cause a denial of service. (CVE-2023-6209)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 23.10
Ubuntu 23.04
Ubuntu 22.04
Ubuntu 20.04
In general, a standard system update will make all the necessary changes.