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Fencer Vulns
high 7.5

CVE-2006-0645 json

Tiny ASN.1 Library (libtasn1) before 0.2.18, as used by (1) GnuTLS 1.2.x before 1.2.10 and 1.3.x before 1.3.4, and (2) GNU Shishi, allows a…

published 2006-02-10 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-0652

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.9%
EPSS 3.9% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Tiny ASN.1 Library (libtasn1) before 0.2.18, as used by (1) GnuTLS 1.2.x before 1.2.10 and 1.3.x before 1.3.4, and (2) GNU Shishi, allows attackers to crash the DER decoder and possibly execute arbitrary code via "out-of-bounds access" caused by invalid input, as demonstrated by the ProtoVer SSL test suite.

Patch / fix

  • gnutls RHEL 4 1.0.20-3.2.2

red hat advisories RHSA-2006:0207

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-2006-0645 updated

- libtasn1 buffer overflow

  • Red Hat Enterprise Linux AS version 4 gnutls 1.0.20-3.2.2 Red Hat Enterprise Linux Desktop version 4 gnutls 1.0.20-3.2.2 Red Hat Enterprise Linux ES version 4 gnutls 1.0.20-3.2.2 Red Hat Enterprise Linux WS version 4 gnutls 1.0.20-3.2.2
    fixed: vendor fix RHSA-2006:0207

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

3.89% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

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

References

Sources

Fencer Vulns 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.