CVE-2018-20721 is a critical out-of-bounds read vulnerability affecting uriparser versions prior to 0.9.1, specifically within the URI_FUNC() in UriParse.c. This flaw occurs when parsing incomplete URIs containing IPv6 addresses with embedded IPv4 addresses, such as "//[::44.1", impacting products like Debian Linux and uriparser itself. With a CVSS score of 9.8, this vulnerability is highly severe, allowing unauthenticated attackers to achieve high confidentiality, integrity, and availability impacts over a network with low attack complexity. While no active exploitation, public exploit code, or significant community discussion has been observed, the potential for severe consequences necessitates prompt patching.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.9.1CPE matchmatch criteria | cpe:2.3:a:uriparser_project:uriparser:*:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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