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CVE-2024-7531

Published: Aug 6, 2024Updated: Mar 19, 2025 Sources: CVE List NVD BDUNVD-CWE-noinfo
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.4%
Top 67.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Calling `PK11_Encrypt()` in NSS using CKM_CHACHA20 and the same buffer for input and output can result in plaintext on an Intel Sandy Bridge processor. In Firefox this only affects the QUIC header protection feature when the connection is using the ChaCha20-Poly1305 cipher suite. The most likely outcome is connection failure, but if the connection persists despite the high packet loss it could be possible for a network observer to identify packets as coming from the same source despite a network path change. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, and Firefox ESR < 128.1.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfoCWE-367

Affected Products

FirefoxMozilla
On-premDesktop App
Consumer Software / browser
Firefox ESRMozilla
Desktop App
Consumer Software / browser
firefoxmozilla
On-premDesktop App
Consumer Software / browser
firefox esrmozilla
Desktop App
Consumer Software / browser
Suse Linux Enterprise ServerNovell Inc.
On-premOS
Operating Systems / linux-distro
mozillaoss-projectUSConsumer Softwareaka mozilla corp.
novell inc.commercialUSOperating Systems
and 10 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1905691
bugzilla.mozilla.org
https://www.mozilla.org/security/advisories/mfsa2024-33/
mozilla.org
https://www.mozilla.org/security/advisories/mfsa2024-34/
mozilla.org
and 13 more references View all →

Timeline

Published
Aug 6, 2024
Last Updated
Mar 19, 2025

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