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Fencer Intel
high 7.5

CVE-2010-0731 json

The gnutls_x509_crt_get_serial function in the GnuTLS library before 1.2.1, when running on big-endian, 64-bit platforms, calls the asn1_re…

published 2010-03-26 16 y ago modified 2026-06-16 4 mo ago also EUVD-2010-0757

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

The gnutls_x509_crt_get_serial function in the GnuTLS library before 1.2.1, when running on big-endian, 64-bit platforms, calls the asn1_read_value with a pointer to the wrong data type and the wrong length value, which allows remote attackers to bypass the certificate revocation list (CRL) check and cause a stack-based buffer overflow via a crafted X.509 certificate, related to extraction of a serial number.

Patch / fix

  • gnutls RHEL 4 1.0.20-4.el4_8.7

red hat advisories RHSA-2010:0167

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2010-0731 updated cvss 5.0

gnutls: gnutls_x509_crt_get_serial incorrect serial decoding from ASN1 (BE64) [GNUTLS-SA-2010-1]

  • Red Hat Enterprise Linux AS version 4 gnutls 1.0.20-4.el4_8.7 Red Hat Enterprise Linux Desktop version 4 gnutls 1.0.20-4.el4_8.7 Red Hat Enterprise Linux ES version 4 gnutls 1.0.20-4.el4_8.7 Red Hat Enterprise Linux WS version 4 gnutls 1.0.20-4.el4_8.7
    fixed: vendor fix RHSA-2010:0167

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.94% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • thread.gmane.org http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/4230 referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=573028 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.