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CVE-2019-11745

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Date: January 8, 2020

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.

Language: C

Severity Score

Related Resources (23)

https://access.redhat.com/errata/RHSA-2020:0243
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04
https://usn.ubuntu.com/4335-1/
https://nvd.nist.gov/vuln/detail/CVE-2019-11745
https://security.alpinelinux.org/vuln/CVE-2019-11745
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.html
https://www.mozilla.org/security/advisories/mfsa2019-36/
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.html
https://www.mozilla.org/security/advisories/mfsa2019-38/
https://access.redhat.com/errata/RHSA-2020:0466
https://www.mozilla.org/security/advisories/mfsa2019-37/
https://bugzilla.mozilla.org/show_bug.cgi?id=1586176
https://security-tracker.debian.org/tracker/CVE-2019-11745
https://usn.ubuntu.com/4241-1/
https://security.gentoo.org/glsa/202003-02
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.html
https://security.gentoo.org/glsa/202003-37
https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-11745
https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
https://access.redhat.com/security/cve/CVE-2019-11745
https://security.gentoo.org/glsa/202003-10
https://www.mend.io/vulnerability-database/CVE-2019-11745

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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