CVE-2020-27545
published 2023-04-16CVE-2020-27545: 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.
PriorityP426medium6.5CVSS 3.1
AVNACLPRNUIRSUCNINAH
EPSS
0.82%
53.3th percentile
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
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | dwarfutils | < dwarfutils 20201201-1 (bookworm) | dwarfutils 20201201-1 (bookworm) |
| libdwarf_project | libdwarf | < 2020-10-17 | 2020-10-17 |
| 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
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-9mh7-9qxg-6fpq: 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
ghsa_unreviewed·2023-04-16
CVE-2020-27545 [MEDIUM] CWE-763 GHSA-9mh7-9qxg-6fpq: 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
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.
OSV
CVE-2020-27545: 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
osv·2023-04-16·CVSS 6.5
CVE-2020-27545 [MEDIUM] CVE-2020-27545: 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
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.
Microsoft
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.
vendor_msrc·2023-04-11·CVSS 6.5
CVE-2020-27545 [MEDIUM] CWE-763 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.
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.
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.
Mariner: Mariner
mitre: mitre
Red Hat
libdwarf: carefully corrupted line table can crash calling app
vendor_redhat·2021-11-22·CVSS 6.5
CVE-2020-27545 [MEDIUM] CWE-125 libdwarf: carefully corrupted line table can crash calling app
libdwarf: carefully corrupted line table can crash calling app
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.
A flaw was found in libdwarf. A possible memory leak 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-2020-27545: dwarfutils - libdwarf before 20201017 has a one-byte out-of-bounds read because of an invalid...
vendor_debian·2020·CVSS 6.5
CVE-2020-27545 [MEDIUM] CVE-2020-27545: dwarfutils - libdwarf before 20201017 has a one-byte out-of-bounds read because of an invalid...
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.
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)
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=2025694https://github.com/davea42/libdwarf-code/commit/95f634808c01f1c61bbec56ed2395af997f397eahttps://sourceforge.net/projects/libdwarf/https://www.prevanders.net/dwarfbug.html#DW202010-001http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/https://bugzilla.redhat.com/show_bug.cgi?id=2025694https://github.com/davea42/libdwarf-code/commit/95f634808c01f1c61bbec56ed2395af997f397eahttps://sourceforge.net/projects/libdwarf/https://www.prevanders.net/dwarfbug.html#DW202010-001
2023-04-16
Published