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Mozilla Foundation Security Advisory 2024-26

Security Vulnerabilities fixed in Firefox ESR 115.12

Announced
June 11, 2024
Impact
high
Products
Firefox ESR
Fixed in
  • Firefox ESR 115.12

#CVE-2024-5702: Use-after-free in networking

Reporter
Kershaw Chang
Impact
high
Description

Memory corruption in the networking stack could have led to a potentially exploitable crash.

References

#CVE-2024-5688: Use-after-free in JavaScript object transplant

Reporter
Lukas Bernhard
Impact
high
Description

If a garbage collection was triggered at the right time, a use-after-free could have occurred during object transplant.

References

#CVE-2024-5690: External protocol handlers leaked by timing attack

Reporter
Satoki Tsuji
Impact
moderate
Description

By monitoring the time certain operations take, an attacker could have guessed which external protocol handlers were functional on a user's system.

References

#CVE-2024-5691: Sandboxed iframes were able to bypass sandbox restrictions to open a new window

Reporter
Luan Herrera
Impact
moderate
Description

By tricking the browser with a X-Frame-Options header, a sandboxed iframe could have presented a button that, if clicked by a user, would bypass restrictions to open a new window.

References

#CVE-2024-5692: Bypass of file name restrictions during saving

Reporter
Raphael Shaniyazov
Impact
moderate
Description

On Windows 10, when using the 'Save As' functionality, an attacker could have tricked the browser into saving the file with a disallowed extension such as .url by including an invalid character in the extension. Note: This issue only affected Windows operating systems. Other operating systems are unaffected.

References

#CVE-2024-5693: Cross-Origin Image leak via Offscreen Canvas

Reporter
Kirtikumar Anandrao Ramchandani
Impact
moderate
Description

Offscreen Canvas did not properly track cross-origin tainting, which could be used to access image data from another site in violation of same-origin policy.

References

#CVE-2024-5696: Memory Corruption in Text Fragments

Reporter
Irvan Kurniawan
Impact
moderate
Description

By manipulating the text in an <input> tag, an attacker could have caused corrupt memory leading to a potentially exploitable crash.

References

#CVE-2024-5700: Memory safety bugs fixed in Firefox 127, Firefox ESR 115.12, and Thunderbird 115.12

Reporter
The Mozilla Fuzzing Team
Impact
high
Description

Memory safety bugs present in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11. 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.

References