CVE-2019-11745
This could have caused heap corruption and a potentially exploitable crash.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.99%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.99% probability · 87th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird · opensuse/leap · canonical/ubuntu linux · debian/debian linux · redhat/enterprise linux server aus · siemens/ruggedcom rox mx5000 firmware · siemens/ruggedcom rox rx1400 firmware · siemens/ruggedcom rox rx1500 firmware · siemens/ruggedcom rox rx1501 firmware · siemens/ruggedcom rox rx1510 firmware · siemens/ruggedcom rox rx1511 firmware · siemens/ruggedcom rox rx1512 firmware · siemens/ruggedcom rox rx5000 firmware
- Source
- security@mozilla.org
EPSS 3.0% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.htmlIssue Tracking, Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.htmlMailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0243Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0466Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1586176Issue Tracking, Patch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdfThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00029.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-02Third Party Advisory
- https://security.gentoo.org/glsa/202003-10Third Party Advisory
- https://security.gentoo.org/glsa/202003-37Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04Third Party Advisory, US Government Resource
- https://usn.ubuntu.com/4241-1/Third Party Advisory
- https://usn.ubuntu.com/4335-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-36/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-37/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-38/Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00001.htmlIssue Tracking, Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.htmlMailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0243Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0466Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1586176Issue Tracking, Patch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdfThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00029.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-02Third Party Advisory
- https://security.gentoo.org/glsa/202003-10Third Party Advisory
- https://security.gentoo.org/glsa/202003-37Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04Third Party Advisory, US Government Resource
- https://usn.ubuntu.com/4241-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.