Medium
Security advisory
chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has '\0' as its first or second character (such as the "/\0" name).
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-18585
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:13 UTC · Revision 1
Source evidence
chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has '\0' as its first or second character (such as the "/\0" name).
osv:CVE-2018-18585
Complete source record
{
"id": "fcd9aa20568f0296e834a71b4961e02ace33eac953795e61573c8a37c15867c6",
"url": "https://osv.dev/vulnerability/CVE-2018-18585",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-18585",
"summary": "chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has '\\0' as its first or second character (such as the \"/\\0\" name).",
"evidence": "osv:CVE-2018-18585",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2018-18585",
"aliases": [
"CVE-2018-18585"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/kyz/libmspack",
"type": "GIT",
"events": [
{
"introduced": "a22627dd5180e0ce9c558d0c10b174c760085f57"
},
{
"last_affected": "bc1010b120a987de3da053ba61870fcbecfbd112"
},
{
"fixed": "8759da8db6ec9e866cb8eb143313f397f925bb4f"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:kyzer:libmspack:0.3:alpha:*:*:*:*:*:*",
"range": [
{
"introduced": "0.3-alpha"
},
{
"last_affected": "0.3-alpha"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:kyzer:libmspack:0.4:alpha:*:*:*:*:*:*",
"range": [
{
"introduced": "0.4-alpha"
},
{
"last_affected": "0.4-alpha"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:kyzer:libmspack:0.5:alpha:*:*:*:*:*:*",
"range": [
{
"introduced": "0.5-alpha"
},
{
"last_affected": "0.5-alpha"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:kyzer:libmspack:0.6:alpha:*:*:*:*:*:*",
"range": [
{
"introduced": "0.6-alpha"
},
{
"last_affected": "0.6-alpha"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:kyzer:libmspack:0.7:alpha:*:*:*:*:*:*",
"range": [
{
"introduced": "0.7-alpha"
},
{
"last_affected": "0.7-alpha"
}
],
"source": "CPE_STRING"
},
{
"range": [
{
"fixed": "8759da8db6ec9e866cb8eb143313f397f925bb4f"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"0.3-alpha",
"0.4-alpha",
"0.5-alpha",
"0.6-alpha",
"0.7-alpha",
"v0.7alpha",
"v0.6alpha",
"v1.5",
"v0.5alpha",
"v0.4alpha",
"v1.4",
"v0.3alpha"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18585.json",
"vanir_signatures": [
{
"id": "CVE-2018-18585-7863a9d1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"284170693861670192769649738077027374383",
"328010522186380992829508643319645870295",
"337185572412918404811406182571160109925",
"311119288129859831691903272572458162229",
"333854538769822575592451592026482133150",
"137173230354041756601323120725473316269",
"35069138540823503665903806403420112095",
"298929599602399015466854119268521340890"
]
},
"source": "https://github.com/kyz/libmspack/commit/8759da8db6ec9e866cb8eb143313f397f925bb4f",
"target": {
"file": "libmspack/mspack/chmd.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2018-18585-9f8a5e9c",
"digest": {
"length": 6633,
"function_hash": "65072954031163830704155016403856911861"
},
"source": "https://github.com/kyz/libmspack/commit/8759da8db6ec9e866cb8eb143313f397f925bb4f",
"target": {
"file": "libmspack/mspack/chmd.c",
"function": "chmd_read_headers"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:22:42Z"
}
}
],
"modified": "2026-10-20T13:22:42.826511206Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2019:2049",
"https://lists.debian.org/debian-lts-announce/2018/10/msg00017.html",
"https://security.gentoo.org/glsa/201903-20",
"https://usn.ubuntu.com/3814-1/",
"https://usn.ubuntu.com/3814-2/",
"https://usn.ubuntu.com/3814-3/",
"https://www.starwindsoftware.com/security/sw-20181213-0002/",
"https://bugs.debian.org/911637",
"https://www.openwall.com/lists/oss-security/2018/10/22/1",
"https://github.com/kyz/libmspack/commit/8759da8db6ec9e866cb8eb143313f397f925bb4f"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "12.04"
},
{
"last_affected": "12.04"
},
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "18.10"
},
{
"last_affected": "18.10"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_desktop",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_workstation",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:ltss:*:*:*",
"cpe:2.3:o:suse:linux_enterprise_server:12:ga:*:*:ltss:*:*:*",
"cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:ltss:*:*:*",
"cpe:2.3:o:suse:linux_enterprise_server:12:sp2:*:*:ltss:*:*:*"
],
"vendor_product": "suse:linux_enterprise_server",
"extracted_events": [
{
"range": [
{
"introduced": "11-sp3"
},
{
"last_affected": "11-sp3"
},
{
"introduced": "12-ga"
},
{
"last_affected": "12-ga"
},
{
"introduced": "12-sp1"
},
{
"last_affected": "12-sp1"
},
{
"introduced": "12-sp2"
},
{
"last_affected": "12-sp2"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-18585",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387585,
"published_at": "2018-10-23T02:29:00.513+00:00"
}