CVE-2020-28163
published 2023-04-16CVE-2020-28163: libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM…
PriorityP424medium6.5CVSS 3.1
AVNACLPRNUIRSUCNINAH
EPSS
0.79%
52.3th percentile
libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | dwarfutils | < dwarfutils 20201201-1 (bookworm) | dwarfutils 20201201-1 (bookworm) |
| libdwarf_project | libdwarf | < 2020-12-01 | 2020-12-01 |
| msrc | azl3_libdwarf_0.9.0-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_libdwarf_0.9.0-3_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_libdwarf_0.9.0_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
osv6.5MEDIUM
vendor_debian6.5MEDIUM
vendor_msrc6.5MEDIUM
vendor_redhat6.5MEDIUM
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Microsoft
libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.
vendor_msrc·2023-04-11·CVSS 6.5
CVE-2020-28163 [MEDIUM] CWE-476 libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.
libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Marin
Red Hat
libdwarf: NULL pointer dereference due to corrupt line table header
vendor_redhat·2021-11-23·CVSS 6.5
CVE-2020-28163 [MEDIUM] CWE-476 libdwarf: NULL pointer dereference due to corrupt line table header
libdwarf: NULL pointer dereference due to corrupt line table header
libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.
A flaw was found in libdwarf. A possible null pointer dereference vulnerability allows an attacker to input a specially crafted file, leading to a crash. The highest threat from this vulnerability is to system availability.
Package: libdwarf (Red Hat Enterprise Linux 7) - Out of support scope
Package: libdwarf (Red Hat Enterprise Linux 8) - Will not fix
Debian
CVE-2020-28163: dwarfutils - libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference a...
vendor_debian·2020·CVSS 6.5
CVE-2020-28163 [MEDIUM] CVE-2020-28163: dwarfutils - libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference a...
libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.
Scope: local
bookworm: resolved (fixed in 20201201-1)
bullseye: resolved (fixed in 20201201-1)
forky: resolved (fixed in 20201201-1)
sid: resolved (fixed in 20201201-1)
trixie: resolved (fixed in 20201201-1)
OSV
CVE-2020-28163: libdwarf before 20201201 allows a dwarf_print_lines
osv·2023-04-16·CVSS 6.5
CVE-2020-28163 [MEDIUM] CVE-2020-28163: libdwarf before 20201201 allows a dwarf_print_lines
libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.
GHSA
GHSA-7732-hqr2-cr7r: libdwarf before 20201201 allows a dwarf_print_lines
ghsa_unreviewed·2023-04-16
CVE-2020-28163 [MEDIUM] CWE-476 GHSA-7732-hqr2-cr7r: libdwarf before 20201201 allows a dwarf_print_lines
libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/https://bugzilla.redhat.com/show_bug.cgi?id=2026000https://github.com/davea42/libdwarf-code/commit/faf99408e3f9f706fc3809dd400e831f989778d3https://www.prevanders.net/dwarfbug.html#DW202010-003http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/https://bugzilla.redhat.com/show_bug.cgi?id=2026000https://github.com/davea42/libdwarf-code/commit/faf99408e3f9f706fc3809dd400e831f989778d3https://www.prevanders.net/dwarfbug.html#DW202010-003
2023-04-16
Published