CVE-2018-20721

moderate-risk
Published 2019-01-16

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.

Do I need to act?

-
0.51% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: f8ccdfd76b2d46b7162c17e01baee4de402947b5, cef25028de5ff872c2e1f0a6c562eb3ea9ecbce4
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (3)

Uriparser

Affected Vendors

Debian Uriparser Project

References (8)

Release Notes https://github.com/uriparser/uriparser/blob/master/ChangeLog
Patch https://github.com/uriparser/uriparser/commit/cef25028de5ff872c2e1f0a6c562eb3ea9...
Mailing List https://lists.debian.org/debian-lts-announce/2019/02/msg00028.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/11/msg00029.html
Release Notes https://github.com/uriparser/uriparser/blob/master/ChangeLog
Patch https://github.com/uriparser/uriparser/commit/cef25028de5ff872c2e1f0a6c562eb3ea9...
Mailing List https://lists.debian.org/debian-lts-announce/2019/02/msg00028.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/11/msg00029.html
43
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 2/34 · Minimal
Exposure 9/34 · Low