CVE-2019-11745
HIGHCVSS 8.8/10EPSS 2.99%
Last modified
CVE-2019-11745 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 2.99% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 71.0 |
| Mozilla | Firefox Esr | < 68.3 |
| Mozilla | Thunderbird | < 68.3.0 |
| Opensuse | Leap | 15.1 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 19.10 |
| Debian | Debian Linux | 9.0 |
| Redhat | Enterprise Linux Server Aus | 6.6 |
| Siemens | Ruggedcom Rox Mx5000 Firmware | < 2.14.0 |
| Siemens | Ruggedcom Rox Rx1400 Firmware | < 2.14.0 |
| Siemens | Ruggedcom Rox Rx1500 Firmware | < 2.14.0 |
| Siemens | Ruggedcom Rox Rx1501 Firmware | < 2.14.0 |
| Siemens | Ruggedcom Rox Rx1510 Firmware | < 2.14.0 |
| Siemens | Ruggedcom Rox Rx1511 Firmware | < 2.14.0 |
| Siemens | Ruggedcom Rox Rx1512 Firmware | < 2.14.0 |
| Siemens | Ruggedcom Rox Rx5000 Firmware | < 2.14.0 |
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
- 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
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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 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.
How severe is CVE-2019-11745?
CVE-2019-11745 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.99% probability of exploitation in the next 30 days.
How do I fix CVE-2019-11745?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2019-11745?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST