CVE-2024-7531
Firefox ChaCha20 encryption buffer overwrite
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.
INFO
Published Date :
Aug. 6, 2024, 1:15 p.m.
Last Modified :
Oct. 30, 2024, 9:35 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-7531.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1905691 | Issue Tracking Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2024-33/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2024-34/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2024-35/ | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-7531 vulnerability anywhere in the article.
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Cyber Security News
Firefox Patches Multiple High Severity Vulnerabilities
Mozilla has released Firefox 129, addressing multiple high-severity vulnerabilities. These patches are critical for enhancing the browser’s security and protecting users from potential exploits. Detai ... Read more
The following table lists the changes that have been made to the
CVE-2024-7531 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 30, 2024
Action Type Old Value New Value Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L -
Initial Analysis by [email protected]
Aug. 12, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1905691 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1905691 Issue Tracking, Permissions Required Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2024-33/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2024-33/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2024-34/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2024-34/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2024-35/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2024-35/ Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 129.0 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 115.14.0 *cpe:2.3:a:mozilla:firefox_esr:128.0:*:*:*:*:*:*:* -
CVE Received by [email protected]
Aug. 06, 2024
Action Type Old Value New Value Added 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. Added Reference Mozilla Corporation https://bugzilla.mozilla.org/show_bug.cgi?id=1905691 [No types assigned] Added Reference Mozilla Corporation https://www.mozilla.org/security/advisories/mfsa2024-33/ [No types assigned] Added Reference Mozilla Corporation https://www.mozilla.org/security/advisories/mfsa2024-34/ [No types assigned] Added Reference Mozilla Corporation https://www.mozilla.org/security/advisories/mfsa2024-35/ [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-7531 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-7531
weaknesses.