CVE-2020-18780
published 2023-08-22CVE-2020-18780: A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
PriorityP418medium5.5CVSS 3.1
AVLACLPRNUIRSUCNINAH
EPSS
0.27%
18.2th percentile
A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | nasm | < nasm 2.15.04-1 (bookworm) | nasm 2.15.04-1 (bookworm) |
| msrc | azl3_tensorflow_2.16.1-9_on_azure_linux_3.0 | — | — |
| msrc | cbl2_tensorflow_2.11.1-2_on_cbl_mariner_2.0 | — | — |
| nasm | nasm | >= 0 < 2.15.04-1 | 2.15.04-1 |
| nasm | nasm | >= 0 < 2.15.04-1 | 2.15.04-1 |
| nasm | nasm | >= 0 < 2.15.04-1 | 2.15.04-1 |
| nasm | nasm | >= 0 < 2.15.04-1 | 2.15.04-1 |
| nasm | netwide_assembler | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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Microsoft
A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
vendor_msrc·2023-08-08·CVSS 5.5
CVE-2020-18780 [MEDIUM] CWE-416 A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
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
mi
Debian
CVE-2020-18780: nasm - A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2....
vendor_debian·2020·CVSS 5.5
CVE-2020-18780 [MEDIUM] CVE-2020-18780: nasm - A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2....
A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
Scope: local
bookworm: resolved (fixed in 2.15.04-1)
bullseye: resolved (fixed in 2.15.04-1)
forky: resolved (fixed in 2.15.04-1)
sid: resolved (fixed in 2.15.04-1)
trixie: resolved (fixed in 2.15.04-1)
Red Hat
nasm: use-after-free in new_Token() in asm/preproc.c
vendor_redhat·2019-11-27·CVSS 5.5
CVE-2020-18780 [MEDIUM] CWE-416 nasm: use-after-free in new_Token() in asm/preproc.c
nasm: use-after-free in new_Token() in asm/preproc.c
A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
Package: nasm (Red Hat Enterprise Linux 6) - Out of support scope
Package: nasm (Red Hat Enterprise Linux 7) - Out of support scope
OSV
CVE-2020-18780: A Use After Free vulnerability in function new_Token in asm/preproc
osv·2023-08-22·CVSS 5.5
CVE-2020-18780 [MEDIUM] CVE-2020-18780: A Use After Free vulnerability in function new_Token in asm/preproc
A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
GHSA
GHSA-32c4-v26c-m9ch: A Use After Free vulnerability in function new_Token in asm/preproc
ghsa_unreviewed·2023-08-22
CVE-2020-18780 [MEDIUM] CWE-416 GHSA-32c4-v26c-m9ch: A Use After Free vulnerability in function new_Token in asm/preproc
A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2023-08-22
Published