Mozilla Foundation Security Advisory 2022-22
Security Vulnerabilities fixed in Thunderbird 91.10
- Announced
- May 31, 2022
- Impact
- high
- Products
- Thunderbird
- Fixed in
-
- Thunderbird 91.10
In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.
#CVE-2022-31736: Cross-Origin resource's length leaked
- Reporter
- Luan Herrera
- Impact
- high
Description
A malicious website could have learned the size of a cross-origin resource that supported Range requests.
References
#CVE-2022-31737: Heap buffer overflow in WebGL
- Reporter
- Atte Kettunen
- Impact
- high
Description
A malicious webpage could have caused an out-of-bounds write in WebGL, leading to memory corruption and a potentially exploitable crash.
References
#CVE-2022-31738: Browser window spoof using fullscreen mode
- Reporter
- Irvan Kurniawan
- Impact
- high
Description
When exiting fullscreen mode, an iframe could have confused the browser about the current state of fullscreen, resulting in potential user confusion or spoofing attacks.
References
#CVE-2022-31739: Attacker-influenced path traversal when saving downloaded files
- Reporter
- Chaobin Zhang
- Impact
- high
Description
When downloading files on Windows, the % character was not escaped, which could have lead to a download incorrectly being saved to attacker-influenced paths that used variables such as %HOMEPATH% or %APPDATA%.
This bug only affects Thunderbird for Windows. Other operating systems are unaffected.
References
#CVE-2022-31740: Register allocation problem in WASM on arm64
- Reporter
- Gary Kwong
- Impact
- high
Description
On arm64, WASM code could have resulted in incorrect assembly generation leading to a register allocation problem, and a potentially exploitable crash.
References
#CVE-2022-31741: Uninitialized variable leads to invalid memory read
- Reporter
- Cybeats PSI Team
- Impact
- high
Description
A crafted CMS message could have been processed incorrectly, leading to an invalid memory read, and potentially further memory corruption.
References
#CVE-2022-1834: Braille space character caused incorrect sender email to be shown for a digitally signed email
- Reporter
- Jonathan von Niessen
- Impact
- high
Description
When displaying the sender of an email, and the sender name contained the Braille Pattern Blank space character multiple times, Thunderbird would have displayed all the spaces. This could have been used by an attacker to send an email message with the attacker's digital signature, that was shown with an arbitrary sender email address chosen by the attacker. If the sender name started with a false email address, followed by many Braille space characters, the attacker's email address was not visible. Because Thunderbird compared the invisible sender address with the signature's email address, if the signing key or certificate was accepted by Thunderbird, the email was shown as having a valid digital signature.
References
#CVE-2022-31742: Querying a WebAuthn token with a large number of allowCredential entries may have leaked cross-origin information
- Reporter
- Michal
- Impact
- moderate
Description
An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could have led to cross-origin account linking in violation of WebAuthn goals.
References
#CVE-2022-31747: Memory safety bugs fixed in Thunderbird 91.10
- Reporter
- Mozilla developers and community
- Impact
- high
Description
Mozilla developers Andrew McCreight, Nicolas B. Pierron, and the Mozilla Fuzzing Team reported memory safety bugs present in Thunderbird 91.9. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.