libtasn1: heap overflow flaw in _asn1_extract_der_octet()
Published May 12, 2015
5.9
MEDIUMCVSS 3.0
EPSS 32.89%
Description
The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.5 allows remote attackers to cause a denial of service (out-of-bounds heap read) via a crafted certificate.
Affected products
No data.
No data.
Red Hat Enterprise Linux 7
libtasn1-0:4.10-1.el7
Fixed · RHSA-2017:1860
Red Hat Enterprise Linux 6
libtasn1
Will not fix
Red Hat Enterprise Virtualization 3
mingw-virt-viewer
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | libtasn1-0:4.10-1.el7 | Fixed | RHSA-2017:1860 |
| Red Hat Enterprise Linux 6 | libtasn1 | Will not fix | n/a |
| Red Hat Enterprise Virtualization 3 | mingw-virt-viewer | Fix deferred | 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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 32.89% (0.32892) | 98.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 33.09% (0.33094) | 98.14th | v5 (v2026.06.15) |
| May 11, 2025 | 6.06% (0.06062) | 90.22th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.45% (0.04453) | 88.02th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.58% (0.05575) | 83.42th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.45% (0.04453) | 88.31th | v4 (v2025.03.14) |
| Dec 22, 2024 | 88.97% (0.88966) | 98.98th | v3 (v2023.03.01) |
| Dec 17, 2024 | 90.39% (0.90389) | 99.08th | v3 (v2023.03.01) |
| Dec 12, 2024 | 91.73% (0.91726) | 99.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 92.39% (0.92394) | 98.38th | 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 (18)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158225.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-updates/2015-08/msg00014.html vendor-advisoryx_refsource_SUSE
- 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://packetstormsecurity.com/files/131711/libtasn1-Heap-Overflow.html x_refsource_MISCExploit
- http://seclists.org/fulldisclosure/2015/Apr/109 mailing-listx_refsource_FULLDISCExploit
- http://www.debian.org/security/2015/dsa-3256 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:232 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/bid/74419 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1032246 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2604-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/errata/RHSA-2017:1860 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2015-3622 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1218141 Issue Tracking
- https://lists.gnu.org/archive/html/help-libtasn1/2015-04/msg00000.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2015-3622
- https://security.gentoo.org/glsa/201509-04 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-3622
Change history (0)
No recorded changes yet.