OESA-2024-1814 (CVE-2020-21685)
Vulnerability from osv_openeuler – Published: 2024-07-05 11:07 – Updated: 2026-08-06 11:07 – Source websiteNASM is the Netwide Assembler, a free portable assembler for the Intel 80x86 microprocessor series, using primarily the traditional Intel instruction mnemonics and syntax. It also provides tools in RDOFF binary format, includes linker, library manager, loader, and information dump.
Security Fix(es):
Buffer Overflow vulnerability in hash_findi function in hashtbl.c in nasm 2.15rc0 allows remote attackers to cause a denial of service via crafted asm file.(CVE-2020-21685)
A stack-use-after-scope issue discovered in expand_mmac_params function in preproc.c in nasm before 2.15.04 allows remote attackers to cause a denial of service via crafted asm file.(CVE-2020-21686)
Buffer Overflow vulnerability in scan function in stdscan.c in nasm 2.15rc0 allows remote attackers to cause a denial of service via crafted asm file.(CVE-2020-21687)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"nasm-2.15.05-1.oe2003sp4.aarch64.rpm",
"nasm-debuginfo-2.15.05-1.oe2003sp4.aarch64.rpm",
"nasm-debugsource-2.15.05-1.oe2003sp4.aarch64.rpm"
],
"noarch": [
"nasm-help-2.15.05-1.oe2003sp4.noarch.rpm"
],
"src": [
"nasm-2.15.05-1.oe2003sp4.src.rpm"
],
"x86_64": [
"nasm-2.15.05-1.oe2003sp4.x86_64.rpm",
"nasm-debuginfo-2.15.05-1.oe2003sp4.x86_64.rpm",
"nasm-debugsource-2.15.05-1.oe2003sp4.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:20.03-LTS-SP4",
"name": "nasm",
"purl": "pkg:rpm/openEuler/nasm\u0026distro=openEuler-20.03-LTS-SP4"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.15.05-1.oe2003sp4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "Medium"
},
"details": "NASM is the Netwide Assembler, a free portable assembler for the Intel 80x86 microprocessor series, using primarily the traditional Intel instruction mnemonics and syntax. It also provides tools in RDOFF binary format, includes linker, library manager, loader, and information dump.\r\n\r\nSecurity Fix(es):\r\n\r\nBuffer Overflow vulnerability in hash_findi function in hashtbl.c in nasm 2.15rc0 allows remote attackers to cause a denial of service via crafted asm file.(CVE-2020-21685)\r\n\r\nA stack-use-after-scope issue discovered in expand_mmac_params function in preproc.c in nasm before 2.15.04 allows remote attackers to cause a denial of service via crafted asm file.(CVE-2020-21686)\r\n\r\nBuffer Overflow vulnerability in scan function in stdscan.c in nasm 2.15rc0 allows remote attackers to cause a denial of service via crafted asm file.(CVE-2020-21687)",
"id": "OESA-2024-1814",
"modified": "2026-08-06T11:07:16Z",
"published": "2024-07-05T11:07:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1814"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-21685"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-21686"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-21687"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "nasm security update",
"upstream": [
"CVE-2020-21685",
"CVE-2020-21686",
"CVE-2020-21687"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Confirmed: The vulnerability has been validated from an analyst's perspective.
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- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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