NULL pointer dereference in Freedesktop Poppler
CVE-2018-20481
XRef::getEntry in XRef.cc in Poppler 0.72.0 mishandles unallocated XRef entries, which allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted PDF document, when XRefEntry::setFlag in XRef.h is called from Parser::makeStream in Parser.cc.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.034 (88.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
- Freedesktop Poppler — versions 0.72.0
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.freedesktop.org/poppler/poppler/issues/692 (Exploit, Issue Tracking, Vendor Advisory)
- gitlab.freedesktop.org/poppler/poppler/merge_requests/143 (Patch, Vendor Advisory)
- usn.ubuntu.com/3865-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/03/msg00008.html (mailing-list, Third Party Advisory)
- www.securityfocus.com/bid/106321 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2019:2022 (vendor-advisory)
- access.redhat.com/errata/RHSA-2019:2713 (vendor-advisory)
- lists.debian.org/debian-lts-announce/2020/07/msg00018.html (mailing-list)
Frequently asked questions
- What is CVE-2018-20481?
- CVE-2018-20481 is a medium-severity vulnerability in Freedesktop Poppler, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2018-12-26.
- How severe is CVE-2018-20481?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2018-20481 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.