Description

When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the block size, a small out of bounds write could occur. This could have caused heap corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.

References

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.html

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.html

https://access.redhat.com/errata/RHSA-2020:0243

https://access.redhat.com/errata/RHSA-2020:0466

https://bugzilla.mozilla.org/show_bug.cgi?id=1586176

https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf

https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html

https://security.gentoo.org/glsa/202003-02

https://security.gentoo.org/glsa/202003-10

https://security.gentoo.org/glsa/202003-37

https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04

https://usn.ubuntu.com/4241-1/

https://usn.ubuntu.com/4335-1/

https://www.mozilla.org/security/advisories/mfsa2019-36/

https://www.mozilla.org/security/advisories/mfsa2019-37/

https://www.mozilla.org/security/advisories/mfsa2019-38/

Details

Risk Information

CVSS v2

CVSS v3