CVE-2018-20843CWE-611xxe

CVE-2018-20843

High · published June 24, 2019

CVSS v3.1
7.5
EPSS
7%
Percentile
94.2
In the wild
Unconfirmed
What it is

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).

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.07107 · 94.2th percentile
Weakness
CWE-611 · Improper Restriction of XML External Entity Reference
Published
2019-06-24T21:15Z
Affected products (19)
ProductVersionsFixed in
libexpat_project/libexpat< 2.2.72.2.7
canonical/ubuntu_linuxall versions—
canonical/ubuntu_linuxall versions—
canonical/ubuntu_linuxall versions—
canonical/ubuntu_linuxall versions—
canonical/ubuntu_linuxall versions—
canonical/ubuntu_linuxall versions—
debian/debian_linuxall versions—
debian/debian_linuxall versions—
fedoraproject/fedoraall versions—
fedoraproject/fedoraall versions—
opensuse/leapall versions—
opensuse/leapall versions—
oracle/hospitality_res_3700≥ 5.7, ≤ 5.7.6—
oracle/http_serverall versions—
oracle/http_serverall versions—
oracle/outside_in_technologyall versions—
oracle/outside_in_technologyall versions—
tenable/nessus< 8.15.08.15.0
References (43)
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html · [email protected]https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226 · [email protected]https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes · [email protected]https://github.com/libexpat/libexpat/issues/186 · [email protected]https://github.com/libexpat/libexpat/pull/262 · [email protected]https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6 · [email protected]https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html · [email protected]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/ · [email protected]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/ · [email protected]https://seclists.org/bugtraq/2019/Jun/39 · [email protected]https://security.gentoo.org/glsa/201911-08 · [email protected]https://security.netapp.com/advisory/ntap-20190703-0001/ · [email protected]https://support.f5.com/csp/article/K51011533 · [email protected]https://usn.ubuntu.com/4040-1/ · [email protected]https://usn.ubuntu.com/4040-2/ · [email protected]https://www.debian.org/security/2019/dsa-4472 · [email protected]https://www.oracle.com/security-alerts/cpuApr2021.html · [email protected]https://www.oracle.com/security-alerts/cpuapr2020.html · [email protected]https://www.oracle.com/security-alerts/cpuoct2020.html · [email protected]https://www.oracle.com/security-alerts/cpuoct2021.html · [email protected]https://www.tenable.com/security/tns-2021-11 · [email protected]http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html · af854a3a-2127-422b-91ae-364da2661108https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226 · af854a3a-2127-422b-91ae-364da2661108https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes · af854a3a-2127-422b-91ae-364da2661108https://github.com/libexpat/libexpat/issues/186 · af854a3a-2127-422b-91ae-364da2661108https://github.com/libexpat/libexpat/pull/262 · af854a3a-2127-422b-91ae-364da2661108https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6 · af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html · af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/ · af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/ · af854a3a-2127-422b-91ae-364da2661108https://seclists.org/bugtraq/2019/Jun/39 · af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201911-08 · af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20190703-0001/ · af854a3a-2127-422b-91ae-364da2661108https://support.f5.com/csp/article/K51011533 · af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4040-1/ · af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4040-2/ · af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2019/dsa-4472 · af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuApr2021.html · af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuapr2020.html · af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2020.html · af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2021.html · af854a3a-2127-422b-91ae-364da2661108https://www.tenable.com/security/tns-2021-11 · af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/html/ssa-398330.html · 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
EPSS history
Timeline
  • 24 JUN 16:06Z
    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…
    cvelistv5