The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as HTML. Prior to pseudoversion `0.0.0-20230922105210-14b16010c2ee`, which corresponds with commit `14b16010c2ee7ff33a940a541d993bd043a88940`, parsing malformed markdown input with parser that uses parser.Mmark extension could result in out-of-bounds read vulnerability. To exploit the vulnerability, parser needs to have `parser.Mmark` extension set. The panic occurs inside the `citation.go` file on the line 69 when the parser tries to access the element past its length. This can result in a denial of service. Commit `14b16010c2ee7ff33a940a541d993bd043a88940`/pseudoversion `0.0.0-20230922105210-14b16010c2ee` contains a patch for this issue.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as     HTML. Prior to pseudoversion `0.0.0-20230922105210-14b16010c2ee`, which corresponds with commit     `14b16010c2ee7ff33a940a541d993bd043a88940`, parsing malformed markdown input with parser that uses     parser.Mmark extension could result in out-of-bounds read vulnerability. To exploit the vulnerability,     parser needs to have `parser.Mmark` extension set. The panic occurs inside the `citation.go` file on the     line 69 when the parser tries to access the element past its length. This can result in a denial of     service. Commit `14b16010c2ee7ff33a940a541d993bd043a88940`/pseudoversion     `0.0.0-20230922105210-14b16010c2ee` contains a patch for this issue. (CVE-2023-42821)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as
    HTML. Prior to pseudoversion `0.0.0-20230922105210-14b16010c2ee`, which corresponds with commit
    `14b16010c2ee7ff33a940a541d993bd043a88940`, parsing malformed markdown input with parser that uses
    parser.Mmark extension could result in out-of-bounds read vulnerability. To exploit the vulnerability,
    parser needs to have `parser.Mmark` extension set. The panic occurs inside the `citation.go` file on the
    line 69 when the parser tries to access the element past its length. This can result in a denial of
    service. Commit `14b16010c2ee7ff33a940a541d993bd043a88940`/pseudoversion
    `0.0.0-20230922105210-14b16010c2ee` contains a patch for this issue. (CVE-2023-42821)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 732282a5-5a10-11ee-bca0-001999f8d30b advisory.

  - The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as     HTML. Prior to pseudoversion `0.0.0-20230922105210-14b16010c2ee`, which corresponds with commit     `14b16010c2ee7ff33a940a541d993bd043a88940`, parsing malformed markdown input with parser that uses     parser.Mmark extension could result in out-of-bounds read vulnerability. To exploit the vulnerability,     parser needs to have `parser.Mmark` extension set. The panic occurs inside the `citation.go` file on the     line 69 when the parser tries to access the element past its length. This can result in a denial of     service. Commit `14b16010c2ee7ff33a940a541d993bd043a88940`/pseudoversion     `0.0.0-20230922105210-14b16010c2ee` contains a patch for this issue. (CVE-2023-42821)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
225839	Linux Distros Unpatched Vulnerability : CVE-2023-42821	Nessus	Misc.	high
416889	SCA: security update for github.com/gomarkdown/markdown (GHSA-m9xq-6h2j-65r2)	Tenable Cloud Security	SCA Checks	high
416889	SCA: security update for github.com/gomarkdown/markdown (GHSA-m9xq-6h2j-65r2)	Tenable Self-Hosted Container Security	SCA Checks	high
181830	FreeBSD : Mailpit affected by vulnerability in included go markdown module (732282a5-5a10-11ee-bca0-001999f8d30b)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2023-42821

high

Tenable Plugins

high

high

high

high