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 (17)
Core 17
Core References
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-36/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-38/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-37/
Issue Tracking, Patch, Vendor Advisory x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1586176
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.html
Issue Tracking, Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.html
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4241-1/
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0243
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0466
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202003-02
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202003-10
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202003-37
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4335-1/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
Third Party Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
Third Party Advisory, US Government Resource x_refsource_misc
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04
Scores
CVSS v3
8.8
EPSS
0.0081
EPSS Percentile
74.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (17)
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
18.04
canonical/ubuntu_linux
19.10
debian/debian_linux
9.0
mozilla/firefox
< 71.0
mozilla/firefox_esr
< 68.3
mozilla/thunderbird
< 68.3.0
opensuse/leap
15.1
redhat/enterprise_linux_server_aus
6.6
siemens/ruggedcom_rox_mx5000_firmware
< 2.14.0
... and 7 more
Published
Jan 08, 2020
Tracked Since
Feb 18, 2026