MGASA-2020-0163 - Updated firefox packages fix security vulnerabilities

Publication date: 08 Apr 2020
URL: https://advisories.mageia.org/MGASA-2020-0163.html
Type: security
Affected Mageia releases: 7
CVE: CVE-2019-XXXX

Updated firefox packages fix security vulnerabilities:

When reading from areas partially or fully outside the source resource
with WebGL's copyTexSubImage method, the specification requires the
returned values be zero. Previously, this memory was uninitialized,
leading to potentially sensitive data disclosure (CVE-2020-6821).

On 32-bit builds, an out of bounds write could have occurred when
processing an image larger than 4 GB in GMPDecodeData. It is possible
that with enough effort this could have been exploited to run arbitrary
code (CVE-2020-6822).

Mozilla developers Tyson Smith and Christian Holler reported memory safety
bugs present in Firefox 74 and Firefox ESR 68.6. 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 (CVE-2020-6825).

References:
- https://bugs.mageia.org/show_bug.cgi?id=26442
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-13/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-XXXX

SRPMS:
- 7/core/firefox-68.7.0-1.mga7
- 7/core/firefox-l10n-68.7.0-1.mga7