CVE-2018-20481

Public Exploit

Description

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.93% Top 25%
Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory freedesktop.org Vendor Advisory freedesktop.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://gitlab.freedesktop.org/poppler/poppler/issues/692 issue tracking exploit vendor advisory
https://gitlab.freedesktop.org/poppler/poppler/merge_requests/143 patch vendor advisory
https://usn.ubuntu.com/3865-1/ third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00008.html third party advisory mailing list
http://www.securityfocus.com/bid/106321 vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2019:2022 vendor advisory
https://access.redhat.com/errata/RHSA-2019:2713 vendor advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00018.html mailing list

Frequently Asked Questions

What is the severity of CVE-2018-20481?
CVE-2018-20481 has been scored as a medium severity vulnerability.
How to fix CVE-2018-20481?
To fix CVE-2018-20481, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-20481 being actively exploited in the wild?
It is possible that CVE-2018-20481 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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