libtasn1: Stack exhaustion due to indefinite recursion during BER decoding
Published Jan 22, 2018
7.5
HIGHCVSS 3.1
EPSS 2.83%
Description
An issue was discovered in the _asn1_decode_simple_ber function in decoding.c in GNU Libtasn1 before 4.13. Unlimited recursion in the BER decoder leads to stack exhaustion and DoS.
Affected products
No data.
Configuration 2
- 9.0
- 26
- 27
No data.
Red Hat Enterprise Linux 6
libtasn1
Not affected
Red Hat Enterprise Linux 7
libtasn1
Will not fix
Red Hat Enterprise Linux 8
libtasn1
Not affected
Red Hat Satellite 6
libtasn1
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | libtasn1 | Not affected | n/a |
| Red Hat Enterprise Linux 7 | libtasn1 | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | libtasn1 | Not affected | n/a |
| Red Hat Satellite 6 | libtasn1 | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of libtasn1 as shipped with Red Hat Satellite version 6. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. 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:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/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
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 (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.83% (0.02825) | 86.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.84% (0.02844) | 84.80th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.58% (0.01584) | 79.90th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.14% (0.03144) | 78.03th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.49% (0.01495) | 87.02th | v3 (v2023.03.01) |
| Aug 18, 2023 | 1.49% (0.01495) | 85.21th | v3 (v2023.03.01) |
| Jun 15, 2023 | 1.64% (0.01635) | 85.70th | v3 (v2023.03.01) |
| May 8, 2023 | 2.30% (0.02300) | 88.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.46% (0.03465) | 90.02th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.66% (0.01659) | 34.20th | v1 |
| Jan 6, 2022 | 1.66% (0.01659) | 33.50th | v1 |
| Sep 1, 2021 | 1.66% (0.01659) | 73.96th | v1 |
| Jun 30, 2021 | 1.66% (0.01659) | 0.00th | v1 |
| Jun 29, 2021 | 1.45% (0.01454) | 0.00th | v1 |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
References (11)
- http://git.savannah.nongnu.org/cgit/libtasn1.git/commit/?id=c593ae84cfcde8fea45787e53950e0ac71e9ca97 x_refsource_CONFIRMPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2018-6003 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1535578 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1535926 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1076832 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://gitlab.com/gnutls/libtasn1/commit/946565d8eb05fbf7970ea366e817581bb5a90910 x_refsource_CONFIRMThird Party Advisory
- 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-2018-6003
- https://www.cve.org/CVERecord?id=CVE-2018-6003
- https://www.debian.org/security/2018/dsa-4106 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.