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CVE-2016-7444

UnknownEPSS 2.44%

Last modified

CVE-2016-7444 is a vulnerability of currently unknown severity. The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc.. EPSS estimates a 2.44% chance of exploitation in the next 30 days.

Description

The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc.

Metrics

EPSS Probability
2.44%

82.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GnuGnutls<= 3.4.14
GnuGnutls3.5.0
GnuGnutls3.5.1
GnuGnutls3.5.2
GnuGnutls3.5.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-7444?
The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc.
How severe is CVE-2016-7444?
Severity scoring for CVE-2016-7444 is pending analysis. The EPSS model estimates a 2.44% probability of exploitation in the next 30 days.
How do I fix CVE-2016-7444?
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-2016-7444?

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

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Source: NVD / NIST