Published: 05/08/2021 Updated: 16/03/2022

CVSS v2 Base Score: 6.8 | Impact Score: 6.4 | Exploitability Score: 8.6

CVSS v3 Base Score: 8.8 | Impact Score: 5.9 | Exploitability Score: 2.8

VMScore: 605

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

Mozilla developers reported memory safety bugs present in Firefox 89. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 90.

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mozilla firefox

Mozilla Foundation Security Advisory 2021-28 Security Vulnerabilities fixed in Firefox 90 Announced July 13, 2021 Impact high Products Firefox Fixed in Firefox 90 ...

Mozilla developers reported memory safety bugs present in Firefox 89 Some of these bugs showed evidence of memory corruption and Mozilla presumes that with enough effort some of these could have been exploited to run arbitrary code ...

CWE-787 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1665836%2C1686138%2C1704316%2C1706314%2C1709931%2C1712084%2C1712357%2C1714066 https://www.mozilla.org/security/advisories/mfsa2021-28/https://security.gentoo.org/glsa/202202-03 https://nvd.nist.gov https://www.mozilla.org/en-US/security/advisories/mfsa2021-28/https://security.archlinux.org/CVE-2021-29977

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CVE-2021-29977

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