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Vulnerability record · CVE-2020-27545 · published 16 April 2023

CVE-2020-27545: Libdwarf project libdwarf vulnerability

LLibdwarf Project · Libdwarf

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.

6.5 CVSS 3.1 Medium EPSS 0.82% · top 44.2% CWE-763 · CWE-763
6.5CVSS 3.1 base score
0.82%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/ Product
https://bugzilla.redhat.com/show_bug.cgi?id=2025694 Issue TrackingPermissions RequiredThird Party Advisory
https://github.com/davea42/libdwarf-code/commit/95f634808c01f1c61bbec56ed2395af997f397ea Patch
https://sourceforge.net/projects/libdwarf/ Product
https://www.prevanders.net/dwarfbug.html#DW202010-001 Third Party Advisory
http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/ Product
https://bugzilla.redhat.com/show_bug.cgi?id=2025694 Issue TrackingPermissions RequiredThird Party Advisory
https://github.com/davea42/libdwarf-code/commit/95f634808c01f1c61bbec56ed2395af997f397ea Patch
https://sourceforge.net/projects/libdwarf/ Product
https://www.prevanders.net/dwarfbug.html#DW202010-001 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2017-9054Libdwarf project libdwarf out-of-bounds read vulnerabilityAn issue, also known as DW201703-002, was discovered in libdwarf 2017-03-21. In _dwarf_decode_s_leb128_chk() a byte pointer was dereferenced just bef…EPSS 1.8%9.8CVE-2017-9052Libdwarf project libdwarf memory buffer overflow vulnerabilityAn issue, also known as DW201703-006, was discovered in libdwarf 2017-03-21. A heap-based buffer over-read in dwarf_formsdata() is due to a failure t…EPSS 2.7%9.8CVE-2017-9055Libdwarf project libdwarf out-of-bounds read vulnerabilityAn issue, also known as DW201703-001, was discovered in libdwarf 2017-03-21. In dwarf_formsdata() a few data types were not checked for being in boun…EPSS 1.7%9.8CVE-2016-9558Libdwarf project libdwarf integer overflow vulnerability(1) libdwarf/dwarf_leb.c and (2) dwarfdump/print_frames.c in libdwarf before 20161124 allow remote attackers to have unspecified impact via a crafted…EPSS 5.1%9.1CVE-2017-9053Libdwarf project libdwarf out-of-bounds read vulnerabilityAn issue, also known as DW201703-005, was discovered in libdwarf 2017-03-21. A heap-based buffer over-read in _dwarf_read_loc_expr_op() is due to a f…EPSS 1.7%9.1CVE-2016-9480Libdwarf project libdwarf memory buffer overflow vulnerabilitylibdwarf 2016-10-21 allows context-dependent attackers to obtain sensitive information or cause a denial of service by using the "malformed dwarf fil…EPSS 3.3%8.8CVE-2022-39170Libdwarf project libdwarf double free vulnerabilitylibdwarf 0.4.1 has a double free in _dwarf_exec_frame_instr in dwarf_frame.c.EPSS 1.2%8.1CVE-2022-34299Libdwarf project libdwarf out-of-bounds read vulnerabilityThere is a heap-based buffer over-read in libdwarf 0.4.0. This issue is related to dwarf_global_formref_b.EPSS 1.4%

Source: NIST National Vulnerability Database (record CVE-2020-27545), CISA KEV, FIRST EPSS (scores of 2026-10-01). This page is refreshed as NVD updates the record.