libtasn1: Stack-based buffer overflow in asn1_find_node()
Published May 22, 2017
8.8
HIGHCVSS 3.1
EPSS 5.58%
Description
Two errors in the "asn1_find_node()" function (lib/parser_aux.c) within GnuTLS libtasn1 version 4.10 can be exploited to cause a stacked-based buffer overflow by tricking a user into processing a specially crafted assignments file via the e.g. asn1Coding utility.
Affected products
-
- Version 4.10. Other versions may also be affected.StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Flexera Software LLC | GnuTLS libtasn1 | n/a |
|
Configuration 2
- 8.0
Configuration 3
- 4.12.1
No data.
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
Red Hat Satellite 6
libtasn1
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 |
| Red Hat Satellite 6 | libtasn1 | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:P/I:P/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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.58% (0.05585) | 92.64th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.58% (0.05585) | 91.86th | v5 (v2026.06.15) |
| Dec 29, 2025 | 1.92% (0.01917) | 82.85th | v4 (v2025.03.14) |
| Nov 21, 2025 | 0.79% (0.00791) | 73.17th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.59% (0.02594) | 84.29th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.72% (0.00720) | 70.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.23% (0.00227) | 61.86th | v3 (v2023.03.01) |
| Nov 16, 2023 | 0.23% (0.00227) | 60.87th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.32% (0.00323) | 67.36th | v3 (v2023.03.01) |
| Jul 18, 2023 | 0.22% (0.00222) | 59.58th | v3 (v2023.03.01) |
| May 8, 2023 | 0.24% (0.00240) | 60.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.28% (0.00283) | 63.60th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.03% (0.03032) | 83.64th | v2 (v2022.01.01) |
| Feb 4, 2023 | 3.03% (0.03032) | 83.25th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.27% (0.02273) | 50.89th | v1 |
| Jan 6, 2022 | 2.27% (0.02273) | 50.38th | v1 |
| Sep 1, 2021 | 2.27% (0.02273) | 77.89th | v1 |
| Jun 30, 2021 | 2.27% (0.02273) | 0.00th | v1 |
| Jun 29, 2021 | 2.07% (0.02069) | 0.00th | v1 |
| Apr 14, 2021 | 1.86% (0.01865) | 0.00th | v1 |
References (14)
- http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=5520704d075802df25ce4ffccc010ba1641bd484 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00018.html vendor-advisoryx_refsource_SUSEBroken Link
- http://www.debian.org/security/2017/dsa-3861 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.securityfocus.com/bid/98641 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038619 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-6891 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1456763 Issue Tracking
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2017-6891
- https://secuniaresearch.flexerasoftware.com/advisories/76125/ x_refsource_MISCPermissions Required
- https://secuniaresearch.flexerasoftware.com/secunia_research/2017-11/ x_refsource_MISCPatchThird Party Advisory
- https://security.gentoo.org/glsa/201710-11 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-6891
Change history (0)
No recorded changes yet.