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CVE-2019-17362

CRITICALCVSS 9.1/10EPSS 3.19%

Last modified

CVE-2019-17362 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 3.19% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Probability
3.19%

86.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LibtomLibtomcrypt<= 1.18.2
DebianDebian Linux8.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2019-17362?
CVE-2019-17362 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 3.19% probability of exploitation in the next 30 days.
How do I fix CVE-2019-17362?
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-2019-17362?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST