An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in nasm_parser_directive() in modules/parsers/nasm/nasm-parse.c.

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

  - An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in     nasm_parser_directive() in modules/parsers/nasm/nasm-parse.c. (CVE-2021-33459)

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

The version of yasm installed on the remote host is prior to 1.2.0-1.5. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2023-1724 advisory.

    An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in     yasm_expr_get_intnum() in libyasm/expr.c. (CVE-2021-33454)

    An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in     nasm_parser_directive() in modules/parsers/nasm/nasm-parse.c. (CVE-2021-33459)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-157 advisory.

    An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in     yasm_expr_get_intnum() in libyasm/expr.c. (CVE-2021-33454)

    An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in     nasm_parser_directive() in modules/parsers/nasm/nasm-parse.c. (CVE-2021-33459)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

ID	Name	Product	Family	Severity
250837	Linux Distros Unpatched Vulnerability : CVE-2021-33459	Nessus	Misc.	medium
173934	Amazon Linux AMI : yasm (ALAS-2023-1724)	Nessus	Amazon Linux Local Security Checks	medium
173843	Amazon Linux 2023 : yasm, yasm-devel (ALAS2023-2023-157)	Nessus	Amazon Linux Local Security Checks	medium

Detections

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CVE-2021-33459

medium

Tenable Plugins

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medium

medium