Home/CVE/When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the block size, a sm
CVE

CVE-2019-11745

When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the block size, a sm

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.

HIGH · CVSS 8.8 EPSS 0.00939
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

15
mozilla firefox< 71.0
mozilla firefox esr< 68.3
mozilla thunderbird< 68.3.0
opensuse leapall versions
canonical ubuntu linuxall versions
debian linuxall versions
redhat enterprise linux server ausall versions
siemens ruggedcom rox mx5000 firmware< 2.14.0
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSQLite Firefox Profile Data DB Access
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Jan 2020 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

28
suse-csafopenSUSE-SU-2024:11058-1
suse-csafSUSE-SU-2020:14418-1
usnUSN-4335-1
rhsaRHBA-2020:0547Important
usnUSN-4241-1
🔗

References & Sources

15
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.htmlIssue TrackingMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.htmlMailing ListThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1586176Issue TrackingPatchVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdfThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00029.htmlMailing ListThird Party Advisory
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