CVE-2023-39741

low-risk
Published 2023-08-17

lrzip v0.651 was discovered to contain a heap overflow via the libzpaq::PostProcessor::write(int) function at /libzpaq/libzpaq.cpp. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted file.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Long Range Zip Project

References (6)

https://gist.github.com/huanglei3/ec9090096aa92445cf0a8baa8e929084
Exploit https://github.com/ckolivas/lrzip/issues/246
Exploit https://github.com/huanglei3/lrzip_poc/tree/main/lrzip_heap_overflow
https://gist.github.com/huanglei3/ec9090096aa92445cf0a8baa8e929084
Exploit https://github.com/ckolivas/lrzip/issues/246
Exploit https://github.com/huanglei3/lrzip_poc/tree/main/lrzip_heap_overflow
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal