CVE-2019-11745

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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.63%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory gentoo.org Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2019-36/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-38/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-37/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1586176 patch vendor advisory issue tracking
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.html vendor advisory mailing list third party advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.html vendor advisory mailing list third party advisory issue tracking
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.html vendor advisory mailing list third party advisory
https://usn.ubuntu.com/4241-1/ third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0243 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0466 third party advisory vendor advisory
https://security.gentoo.org/glsa/202003-02 third party advisory vendor advisory
https://security.gentoo.org/glsa/202003-10 third party advisory vendor advisory
https://security.gentoo.org/glsa/202003-37 third party advisory vendor advisory
https://usn.ubuntu.com/4335-1/ third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html third party advisory mailing list
https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf third party advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2019-11745?
CVE-2019-11745 has been scored as a high severity vulnerability.
How to fix CVE-2019-11745?
To fix CVE-2019-11745, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-11745 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-11745 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-11745?
CVE-2019-11745 affects Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox.
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