What is CVE-2023-28638?

CVE-2023-28638 is a high-severity vulnerability in Brantburnett Snappier, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.0/10. Published 2023-03-27.

How severe is CVE-2023-28638?

High severity. CVSS v3 base score is 7.0 out of 10.

Is CVE-2023-28638 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Brantburnett Snappier

CVE-2023-28638

Snappier is a high performance C# implementation of the Snappy compression algorithm. This is a buffer overrun vulnerability that can affect any user of Snappier 1.1.0. In this release, much of the code was rewritten to use byte references…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (50.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H.

Affected products

Brantburnett Snappier — versions = 1.1.0

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

seal-community/patches

References

https://github.com/brantburnett/Snappier/security/advisories/GHSA-838x-pcvx-6p5w (x_refsource_CONFIRM)
https://github.com/brantburnett/Snappier/commit/d7ac5267b5b18439e6d108f8138edf48c436b32f (x_refsource_MISC)

Frequently asked questions

What is CVE-2023-28638?: CVE-2023-28638 is a high-severity vulnerability in Brantburnett Snappier, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.0/10. Published 2023-03-27.
How severe is CVE-2023-28638?: High severity. CVSS v3 base score is 7.0 out of 10.
Is CVE-2023-28638 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.