Vulnerability Details : CVE-2024-7531
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.
Products affected by CVE-2024-7531
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:128.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2024-7531
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 28 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2024-7531
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
2.8
|
3.4
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2024-10-30 |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
2.8
|
3.6
|
NIST | 2024-08-12 |
CWE ids for CVE-2024-7531
-
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
References for CVE-2024-7531
-
https://www.mozilla.org/security/advisories/mfsa2024-35/
Security Vulnerabilities fixed in Firefox ESR 128.1 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2024-34/
Security Vulnerabilities fixed in Firefox ESR 115.14 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2024-33/
Security Vulnerabilities fixed in Firefox 129 — MozillaVendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1905691
Access DeniedIssue Tracking;Permissions Required
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