CVE-2018-18751

Public Exploit

Description

An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.33% Top 25%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://usn.ubuntu.com/3815-2/ third party advisory vendor advisory
https://usn.ubuntu.com/3815-1/ third party advisory vendor advisory
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption third party advisory exploit
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefree third party advisory exploit
https://access.redhat.com/errata/RHSA-2019:3643 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-18751?
CVE-2018-18751 has been scored as a critical severity vulnerability.
How to fix CVE-2018-18751?
To fix CVE-2018-18751, 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-2018-18751 being actively exploited in the wild?
It is possible that CVE-2018-18751 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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