PT-2023-27098 · Lrzip+1 · Lrzip+1

Huanglei3 · Published 2023-08-17 · Updated 2023-08-25 · CVE-2023-39741

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions lrzip version 0.651

Description The issue is related to a heap overflow via the libzpaq::PostProcessor::write(int) function at /libzpaq/libzpaq.cpp. This allows attackers to cause a Denial of Service (DoS) via a crafted file.

Recommendations For lrzip version 0.651, as a temporary workaround, consider disabling the libzpaq::PostProcessor::write(int) function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2023-39741

Affected Products

Debian

Lrzip

References · 15

• 🔥 https://github.com/ckolivas/lrzip/issues/246 · Exploit
• 🔥 https://github.com/huanglei3/lrzip_poc/tree/main/lrzip_heap_overflow · Exploit
• https://osv.dev/vulnerability/CVE-2023-39741 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-39741 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-39741 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-39741 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-39741 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-39741 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-39741 · Security Note
• https://t.me/cibsecurity/68781 · Telegram Post
• https://twitter.com/CVEnew/status/1692253035450265802 · Twitter Post
• https://t.me/cvenotify/56808 · Telegram Post
• https://gist.github.com/huanglei3/ec9090096aa92445cf0a8baa8e929084 · Note
• https://twitter.com/TechFishNews/status/1692274052193476828 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1692275669781151747 · Twitter Post