Buffer overflow in Apache Bookkeeper
CVE-2017-6891
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.056 (92.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.056 · newest: 0.056 · change: 0.000
Affected products
- Apache Bookkeeper — versions 4.12.1
- Flexera Software Llc Gnutls Libtasn1 — versions 4.10. Other versions may also be affected.
- GNU Libtasn1 — versions 4.10
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.gentoo.org/glsa/201710-11 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2017/dsa-3861 (vendor-advisory, Third Party Advisory)
- secuniaresearch.flexerasoftware.com/advisories/76125/ (Permissions Required)
- secuniaresearch.flexerasoftware.com/secunia_research/2017-11/ (Patch, Third Party Advisory)
- git.savannah.gnu.org/gitweb/
- www.securityfocus.com/bid/98641 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1038619 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00018.html (vendor-advisory, Broken Link)
- lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a4508… (mailing-list)
- lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698… (mailing-list)
Frequently asked questions
- What is CVE-2017-6891?
- CVE-2017-6891 is a high-severity vulnerability in Apache Bookkeeper, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2017-05-22.
- How severe is CVE-2017-6891?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2017-6891 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.