USN-4202-1: Thunderbird vulnerabilities
thunderbird vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.10
- Ubuntu 18.04 LTS
Summary
Several security issues were fixed in Thunderbird.
Software Description
- thunderbird - Mozilla Open Source mail and newsgroup client
Details
It was discovered that a specially crafted S/MIME message with an inner encryption layer could be displayed as having a valid signature in some circumstances, even if the signer had no access to the encrypted message. An attacker could potentially exploit this to spoof the message author. (CVE-2019-11755)
Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, bypass security restrictions, bypass same-origin restrictions, conduct cross-site scripting (XSS) attacks, or execute arbitrary code. (CVE-2019-11757, CVE-2019-11758, CVE-2019-11759, CVE-2019-11760, CVE-2019-11761, CVE-2019-11762, CVE-2019-11763, CVE-2019-11764)
A heap overflow was discovered in the expat library in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. (CVE-2019-15903)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.10
- thunderbird - 1:68.2.1+build1-0ubuntu0.19.10.1
- Ubuntu 18.04 LTS
- thunderbird - 1:68.2.1+build1-0ubuntu0.18.04.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Thunderbird to make all the necessary changes.
References
- CVE-2019-11755
- CVE-2019-11757
- CVE-2019-11758
- CVE-2019-11759
- CVE-2019-11760
- CVE-2019-11761
- CVE-2019-11762
- CVE-2019-11763
- CVE-2019-11764
- CVE-2019-15903
from Ubuntu Security Notices https://ift.tt/2DmaTq8