CVE-2019-17362
This allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) or read information from other memory locations via carefully crafted DER-encoded data.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In LibTomCrypt through 1.18.2, the der_decode_utf8_string function (in der_decode_utf8_string.c) does not properly detect certain invalid UTF-8 sequences. This allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) or read information from other memory locations via carefully crafted DER-encoded data.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 3.11% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- libtom/libtomcrypt · debian/debian linux
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00041.html
- https://github.com/libtom/libtomcrypt/issues/507Exploit, Third Party Advisory
- https://github.com/libtom/libtomcrypt/pull/508Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00010.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR244XKRMCZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEENHDJZJ3RJW/
- https://vuldb.com/?id.142995Permissions Required
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00041.html
- https://github.com/libtom/libtomcrypt/issues/507Exploit, Third Party Advisory
- https://github.com/libtom/libtomcrypt/pull/508Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00010.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR244XKRMCZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEENHDJZJ3RJW/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR244XKRMCZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEENHDJZJ3RJW/
- https://vuldb.com/?id.142995Permissions Required
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.