Vulnerability in GNU Libtasn1
CVE-2018-1000654
GNU Libtasn1-4.13 libtasn1-4.13 version libtasn1-4.13, libtasn1-4.12 contains a DoS, specifically CPU usage will reach 100% when running asn1Paser against the POC due to an issue in _asn1_expand_object_id(p_tree), after a long time, the program will be killed. This attack appears to be exploitable via parsing a crafted file.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- GNU Libtasn1 — versions 4.12, 4.13
Public proof-of-concept exploits
References
- gitlab.com/gnutls/libtasn1/issues/4 (Exploit, Third Party Advisory)
- www.securityfocus.com/bid/105151 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00009.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00018.html (vendor-advisory)
- lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac… (mailing-list)
Frequently asked questions
- What is CVE-2018-1000654?
- CVE-2018-1000654 is a medium-severity vulnerability in GNU Libtasn1. CVSS score: 5.5/10. Published 2018-08-20.
- How severe is CVE-2018-1000654?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2018-1000654 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.