Out-of-bounds Read in Haxx Curl
CVE-2018-16842
Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function that may result in information exposure and denial of service.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.021 (81.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Haxx Curl
- The Curl Project Curl: — versions from 7.14.1 to 7.61.1
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.gentoo.org/glsa/201903-03 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4331 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/11/msg00005.html (mailing-list, Mailing List, Third Party Advisory)
- curl.haxx.se/docs/CVE-2018-16842.html (Patch, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.securitytracker.com/id/1042014 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/curl/curl/commit/d530e92f59ae9bb2d47066c3c460b25d2ffeb211 (Patch, Third Party Advisory)
- usn.ubuntu.com/3805-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3805-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:2181 (vendor-advisory)
Frequently asked questions
- What is CVE-2018-16842?
- CVE-2018-16842 is a medium-severity vulnerability in Haxx Curl, classified under Out-of-bounds Read. CVSS score: 4.4/10. Published 2018-10-31.
- How severe is CVE-2018-16842?
- Medium severity. CVSS v3 base score is 4.4 out of 10.
- Is CVE-2018-16842 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.