CVE-2018-20843
- Source
- https://cve.org/CVERecord?id=CVE-2018-20843
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-20843.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2018-20843
- Downstream
- Related
- Published
- 2019-06-24T17:15:09.980Z
- Modified
- 2026-04-09T06:15:09.116986Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).
- References
-
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
- https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
- https://security.gentoo.org/glsa/201911-08
- https://usn.ubuntu.com/4040-1/
- https://www.tenable.com/security/tns-2021-11
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
- https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
- https://usn.ubuntu.com/4040-2/
- https://www.debian.org/security/2019/dsa-4472
- https://seclists.org/bugtraq/2019/Jun/39
- https://security.netapp.com/advisory/ntap-20190703-0001/
- https://support.f5.com/csp/article/K51011533
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
- https://github.com/libexpat/libexpat/issues/186
- https://github.com/libexpat/libexpat/pull/262
- https://www.oracle.com/security-alerts/cpuoct2021.html
Affected packages
Git / github.com/libexpat/libexpat
Affected versions
Other
REC1_0
R_1_95_0
R_1_95_2
R_1_95_3
R_1_95_4
R_1_95_5
R_1_95_6
R_1_95_7
R_1_95_8
R_2_0_0
R_2_0_1
R_2_1_0
R_2_1_1
R_2_2_0
R_2_2_1
R_2_2_2
R_2_2_3
R_2_2_4
R_2_2_5
R_2_2_6
V1990307
V19981122
V19981231
V19990109
V19990425
V19990626
V19990709
V19990728
V19991013
V1_0
V1_1
V20000512
beta2
beta3
beta4
jclark-orig
libexpat-alpha-1
sourceforge_init
start
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "12.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "14.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18.10"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "19.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "29"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "30"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.1"
}
]
},
{
"events": [
{
"introduced": "5.7"
},
{
"last_affected": "5.7.6"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "12.1.3.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "12.2.1.4.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.5.4"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.5.5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.15.0"
}
]
}
]
source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-20843.json"