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Fencer Intel
critical 10.0

CVE-2015-2806 json

Stack-based buffer overflow in asn1_der_decoding in libtasn1 before 4.4 allows remote attackers to have unspecified impact via unknown vect…

published 2015-04-10 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-2894

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.7%
EPSS 7.7% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Stack-based buffer overflow in asn1_der_decoding in libtasn1 before 4.4 allows remote attackers to have unspecified impact via unknown vectors.

Patch / fix

  • libtasn1-6 Debian 14, Debian 13, Debian 12 4.2-3

debian advisories DEBIAN-CVE-2015-2806

  • libtasn1-6 Ubuntu 14.04 LTS 3.4-3ubuntu0.2

ubuntu advisories UBUNTU-CVE-2015-2806

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libtasn1 RHEL 7 4.10-1.el7
  • libtasn1-tools RHEL 7 4.10-1.el7

red hat advisories RHSA-2017:1860

  • gnutls SLES for SAP 11 SP4, SLES for SAP 11 SP3, SLES 11 SP4 +8 more 2.4.1-24.39.60.1
  • libtasn1 SLES for SAP 12, SLES 12, SLED 12 +1 more 3.7-4.1

suse advisories SUSE-SU-2016:0077-1SUSE-SU-2015:0904-1

  • libtasn1 openSUSE Tumbleweed 4.9-1.3

opensuse advisories openSUSE-SU-2024:10414-1

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-2015-2806 updated cvss 3.3

libtasn1: stack overflow in asn1_der_decoding

  • Red Hat Enterprise Linux 6 libtasn1, libtasn1-tools
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Virtualization 3 mingw-virt-viewer, mingw32-virt-viewer, mingw64-virt-viewer
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux Client (v. 7) libtasn1 4.10-1.el7 Red Hat Enterprise Linux Client Optional (v. 7) libtasn1-tools 4.10-1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) libtasn1 4.10-1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libtasn1-tools 4.10-1.el7 Red Hat Enterprise Linux Server (v. 7) libtasn1 4.10-1.el7 Red Hat Enterprise Linux Server Optional (v. 7) libtasn1-tools 4.10-1.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) libtasn1 4.10-1.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) libtasn1-tools 4.10-1.el7
    fixed: vendor fix RHSA-2017:1860

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

7.75% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

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.