libtasn1: infinite loop while parsing DER certificates
Published May 5, 2016
5.9
MEDIUMCVSS 3.0
EPSS 25.88%
Description
The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.
Affected products
No data.
Configuration 1
- 12.04
- 14.04
- 15.10
- 16.04
Configuration 4
- 22
- 23
- 24
No data.
Red Hat Enterprise Linux 5
gnutls
Will not fix
Red Hat Enterprise Linux 6
libtasn1
Will not fix
Red Hat Enterprise Linux 7
libtasn1
Will not fix
Red Hat Enterprise Virtualization 3
mingw-virt-viewer
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | gnutls | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libtasn1 | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libtasn1 | Will not fix | n/a |
| Red Hat Enterprise Virtualization 3 | mingw-virt-viewer | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 25.88% (0.25879) | 97.92th | v5 (v2026.06.15) |
| Jul 30, 2026 | 25.88% (0.25879) | 97.77th | v5 (v2026.06.15) |
| Jun 15, 2026 | 29.57% (0.29572) | 97.94th | v5 (v2026.06.15) |
| Mar 30, 2025 | 4.29% (0.04290) | 87.79th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.86% (0.06863) | 85.26th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.29% (0.04290) | 88.10th | v4 (v2025.03.14) |
| Feb 23, 2025 | 29.83% (0.29829) | 96.99th | v3 (v2023.03.01) |
| Nov 28, 2024 | 25.46% (0.25459) | 96.86th | v3 (v2023.03.01) |
| Sep 8, 2024 | 23.70% (0.23702) | 96.67th | v3 (v2023.03.01) |
| Jun 4, 2024 | 25.63% (0.25632) | 96.71th | v3 (v2023.03.01) |
| Dec 22, 2023 | 22.91% (0.22909) | 96.08th | v3 (v2023.03.01) |
| Aug 6, 2023 | 21.09% (0.21094) | 95.77th | v3 (v2023.03.01) |
| May 18, 2023 | 22.63% (0.22630) | 95.81th | v3 (v2023.03.01) |
| Apr 8, 2023 | 20.04% (0.20042) | 95.55th | v3 (v2023.03.01) |
| Mar 7, 2023 | 22.01% (0.22009) | 95.68th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
References (17)
- http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=a6e0a0b58f5cdaf4e9beca5bce69c09808cbb625 x_refsource_CONFIRM
- http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=f435825c0f527a8e52e6ffbc3ad0bc60531d537e x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182299.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182907.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183221.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-updates/2016-06/msg00047.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2016-06/msg00097.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2016/dsa-3568 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2016/04/11/3 mailing-listx_refsource_MLIST
- http://www.ubuntu.com/usn/USN-2957-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2957-2 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2016-4008 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1325965 Issue Tracking
- https://lists.gnu.org/archive/html/help-libtasn1/2016-04/msg00009.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2016-4008
- https://security.gentoo.org/glsa/201703-05 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-4008
Change history (0)
No recorded changes yet.