Out-of-bounds Read in Libtom Libtomcrypt
CVE-2019-17362
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.031 (87.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000
Affected products
- Libtom Libtomcrypt
- Debian Linux — versions 8.0
Weakness classification (CWE)
References
- vuldb.com/ (Permissions Required)
- github.com/libtom/libtomcrypt/issues/507 (Exploit, Third Party Advisory)
- github.com/libtom/libtomcrypt/pull/508 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/10/msg00010.html (mailing-list, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-11/msg00041.html (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2019-17362?
- CVE-2019-17362 is a critical-severity vulnerability in Libtom Libtomcrypt, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2019-10-09.
- How severe is CVE-2019-17362?
- Critical severity. CVSS v3 base score is 9.1 out of 10.