What’s Vulnerable › Vulnerabilities

CVE-2020-27545

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-16 · updated 2026-06-17
• Weakness: CWE-763

Description

libdwarf before 20201017 has a one-byte out-of-bounds read because of an invalid pointer dereference via an invalid line table in a crafted object.

Affected products

• Libdwarf Project Libdwarf: before 2020-10-17 — fixed in 2020-10-17

How to fix

Upgrade to a fixed version: Libdwarf Project Libdwarf 2020-10-17. Check the vendor advisory for mitigations.

References

• http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/
• https://bugzilla.redhat.com/show_bug.cgi?id=2025694
• https://github.com/davea42/libdwarf-code/commit/95f634808c01f1c61bbec56ed2395af997f397ea
• https://sourceforge.net/projects/libdwarf/
• https://www.prevanders.net/dwarfbug.html#DW202010-001
• http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/
• https://bugzilla.redhat.com/show_bug.cgi?id=2025694
• https://github.com/davea42/libdwarf-code/commit/95f634808c01f1c61bbec56ed2395af997f397ea
• https://sourceforge.net/projects/libdwarf/
• https://www.prevanders.net/dwarfbug.html#DW202010-001

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