Vulnerability 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.
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Libtasn1 | <= 4.12 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 26 |
Related Weaknesses (CWE)
References
- http://git.savannah.nongnu.org/cgit/libtasn1.git/commit/?id=c593ae84cfcde8fea457PatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1535926Issue TrackingThird Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1076832Issue TrackingThird Party Advisory
- https://gitlab.com/gnutls/libtasn1/commit/946565d8eb05fbf7970ea366e817581bb5a909Third Party Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e3
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8
- https://www.debian.org/security/2018/dsa-4106Third Party Advisory
- http://git.savannah.nongnu.org/cgit/libtasn1.git/commit/?id=c593ae84cfcde8fea457PatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1535926Issue TrackingThird Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1076832Issue TrackingThird Party Advisory
- https://gitlab.com/gnutls/libtasn1/commit/946565d8eb05fbf7970ea366e817581bb5a909Third Party Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e3
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8
- https://www.debian.org/security/2018/dsa-4106Third Party Advisory
FAQ
What is CVE-2018-6003?
CVE-2018-6003 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.
How severe is CVE-2018-6003?
CVE-2018-6003 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-6003?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Libtasn1, Debian Debian Linux, Fedoraproject Fedora.