ASA-2019-00435 – Mozilla Firefox and Thunderbird: Empty or malformed p256-ECDH public keys may trigger a segmentation fault

Posted on by Allele Security Intelligence in Alerts

Allele Security Alert

ASA-2019-00435

Identifier(s)

ASA-2019-00435, CVE-2019-11729, MFSA2019-21, MFSA2019-22, MFSA2019-23

Title

Empty or malformed p256-ECDH public keys may trigger a segmentation fault

Vendor(s)

Mozilla

Product(s)

Mozilla Firefox
Mozilla Firefox ESR
Mozilla Thunderbird

Affected version(s)

Mozilla Firefox versions before 68
Mozilla Firefox ESR versions before 60.8
Mozilla Thunderbird versions before 60.8

Fixed version(s)

Mozilla Firefox version 68
Mozilla Firefox ESR version 60.8
Mozilla Thunderbird version 60.8

Proof of concept

Unknown

Description

Empty or malformed p256-ECDH public keys may trigger a segmentation fault due values being improperly sanitized before being copied into memory and used.

Technical details

Unknown

Credits

Jonas Allmann

Reference(s)

Mozilla Foundation Security Advisory 2019-21
https://www.mozilla.org/en-US/security/advisories/mfsa2019-21/#CVE-2019-11729

Mozilla Foundation Security Advisory 2019-22
https://www.mozilla.org/en-US/security/advisories/mfsa2019-22/#CVE-2019-11729

Mozilla Foundation Security Advisory 2019-23
https://www.mozilla.org/en-US/security/advisories/mfsa2019-23/#CVE-2019-11729

Bug 1515342
https://bugzilla.mozilla.org/show_bug.cgi?id=1515342

CVE-2019-11729
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11729

CVE-2019-11729
https://nvd.nist.gov/vuln/detail/CVE-2019-11729

If there is any error in this alert or you wish a comprehensive analysis, let us know.

Last modified: July 23, 2019

We are not responsible for any data loss, device corruption or any other type of issue due to the use of any information mentioned in our security alerts.