How severe is CVE-2023-51258?

CVE-2023-51258 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-51258 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51258?

CVE-2023-51258 affects Tortall Yasm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51258?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-51258 have an EU (EUVD) identifier?

Yes. CVE-2023-51258 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-55980.

When was CVE-2023-51258 published?

CVE-2023-51258 was published on 2024-01-18 and last updated on 2026-06-17.

CVE-2023-51258

CVE-2023-51258 is a medium-severity vulnerability in Tortall Yasm with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-55980
Weakness: CWE-401
Affected product: Tortall Yasm
Published: 2024-01-18
Last modified: 2026-06-17

Description

A memory leak issue discovered in YASM v.1.3.0 allows a local attacker to cause a denial of service via the new_Token function in the modules/preprocs/nasm/nasm-pp:1512.

Frequently asked questions

What is CVE-2023-51258?: A memory leak issue discovered in YASM v.1.3.0 allows a local attacker to cause a denial of service via the new_Token function in the modules/preprocs/nasm/nasm-pp:1512.
How severe is CVE-2023-51258?: CVE-2023-51258 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-51258 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51258?: CVE-2023-51258 affects Tortall Yasm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51258?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-51258 have an EU (EUVD) identifier?: Yes. CVE-2023-51258 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-55980.
When was CVE-2023-51258 published?: CVE-2023-51258 was published on 2024-01-18 and last updated on 2026-06-17.

References

https://github.com/hanxuer/crashes/blob/main/yasm/04/readme.md

Affected products (1)

cpe:2.3:a:tortall:yasm:1.3.0:*:*:*:*:*:*:*

More vulnerabilities in Tortall Yasm

CVE-2023-31973 — Medium (CVSS 5.5): yasm v1.3.0 was discovered to contain a use after free via the function expand_mmac_params at /nasm/nasm-pp.c. Note:…
CVE-2023-31974 — Medium (CVSS 5.5): yasm v1.3.0 was discovered to contain a use after free via the function error at /nasm/nasm-pp.c. Note: Multiple third…
CVE-2023-31972 — Medium (CVSS 5.5): yasm v1.3.0 was discovered to contain a use after free via the function pp_getline at /nasm/nasm-pp.c. Note: Multiple…
CVE-2021-33468 — Medium (CVSS 5.5): An issue was discovered in yasm version 1.3.0. There is a use-after-free in error() in modules/preprocs/nasm/nasm-pp.c.
CVE-2021-33467 — Medium (CVSS 5.5): An issue was discovered in yasm version 1.3.0. There is a use-after-free in pp_getline() in…
CVE-2021-33466 — Medium (CVSS 5.5): An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in expand_smacro() in…

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