CVE-2018-20721

Description

URI_FUNC() in UriParse.c in uriparser before 0.9.1 has an out-of-bounds read (in uriParse*Ex* functions) for an incomplete URI with an IPv6 address containing an embedded IPv4 address, such as a "//[::44.1" address.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.54%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory debian.org Third-Party Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://lists.debian.org/debian-lts-announce/2019/02/msg00028.html third party advisory mailing list
https://github.com/uriparser/uriparser/commit/cef25028de5ff872c2e1f0a6c562eb3ea9ecbce4 third party advisory patch
https://github.com/uriparser/uriparser/blob/master/ChangeLog third party advisory release notes
https://lists.debian.org/debian-lts-announce/2021/11/msg00029.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2018-20721?
CVE-2018-20721 has been scored as a critical severity vulnerability.
How to fix CVE-2018-20721?
To fix CVE-2018-20721, 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-2018-20721 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-20721 is being actively exploited. 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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