CVE-2021-23975
published 2021-02-26CVE-2021-23975: The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was…
PriorityP430medium6.5CVSS 3.1
AVNACLPRNUIRSUCNIHAN
EPSS
1.02%
59.1th percentile
The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. This vulnerability affects Firefox < 86.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 86.0-1 (sid) | firefox 86.0-1 (sid) |
| mozilla | firefox | < 86 | 86 |
| mozilla | firefox | < 86.0 | 86.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 86.0+build3-0ubuntu0.16.04.1 | 86.0+build3-0ubuntu0.16.04.1 |
| mozilla | firefox | >= 0 < 86.0+build3-0ubuntu0.18.04.1 | 86.0+build3-0ubuntu0.18.04.1 |
| mozilla | firefox | >= 0 < 86.0+build3-0ubuntu0.20.04.1 | 86.0+build3-0ubuntu0.20.04.1 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
osv6.5MEDIUM
vendor_debian6.5MEDIUM
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Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2021-02-26
CVE-2021-23971 Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Firefox could be made to crash or run programs as your login if it
opened a malicious website.
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, conduct cross-site scripting (XSS) attacks, bypass HTTP auth
phishing warnings, or execute arbitrary code.
Instructions: After a standard system update you need to restart Firefox to make
all the necessary changes.
Debian
CVE-2021-23975: firefox - The developer page about:memory has a Measure function for exploring what object...
vendor_debian·2021·CVSS 6.5
CVE-2021-23975 [MEDIUM] CVE-2021-23975: firefox - The developer page about:memory has a Measure function for exploring what object...
The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. This vulnerability affects Firefox < 86.
Scope: local
sid: resolved (fixed in 86.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-07: CVE-2021-23975
vendor_mozilla·CVSS 6.5
CVE-2021-23975 [MEDIUM] Mozilla Foundation Security Advisory 2021-07: CVE-2021-23975
Mozilla Foundation Security Advisory 2021-07
CVE: CVE-2021-23975
Product: Firefox
Impact: high
Fixed in: Firefox 86
GHSA
GHSA-2r68-8x78-ffgh: The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes
ghsa_unreviewed·2022-05-24
CVE-2021-23975 [MEDIUM] CWE-862 GHSA-2r68-8x78-ffgh: The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes
The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. This vulnerability affects Firefox < 86.
OSV
CVE-2021-23975: The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes
osv·2021-02-26·CVSS 6.5
CVE-2021-23975 [MEDIUM] CVE-2021-23975: The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes
The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. This vulnerability affects Firefox < 86.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1685145https://security.gentoo.org/glsa/202104-10https://www.mozilla.org/security/advisories/mfsa2021-07/https://bugzilla.mozilla.org/show_bug.cgi?id=1685145https://security.gentoo.org/glsa/202104-10https://www.mozilla.org/security/advisories/mfsa2021-07/
2021-02-26
Published