Vulnerability Monitor

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CVE-2020-15656

JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code, resulting in this bug rated at only moderate severity. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

Published

2020-08-10T18:15:12.547

Last Modified

2024-11-21T05:05:57.413

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

8.6

Impact Score

10.0

Weaknesses

Type: Primary
CWE-843

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 79.0	Yes
Application	mozilla	firefox_esr	< 78.1	Yes
Application	mozilla	thunderbird	< 78.1	Yes
Operating System	opensuse	leap	15.2	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes
Operating System	canonical	ubuntu_linux	20.04	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html Third Party Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1647293 Issue Tracking, Permissions Required, Vendor Advisory ([email protected])
https://usn.ubuntu.com/4443-1/ Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-30/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-32/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-33/ Vendor Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.mozilla.org/show_bug.cgi?id=1647293 Issue Tracking, Permissions Required, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4443-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-30/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-32/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-33/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)