CVE-2018-20843

Description

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).

Scores

Weaknesses (CWE)

• CWE-611

European references

• ENISA EUVD · EUVD-2018-13383
• GCVE · GCVE-0-2018-20843

CERT-FR advisories

• CERTFR-2023-AVI-1015 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
• CERTFR-2022-AVI-267 — Multiples vulnérabilités dans Juniper Networks Junos Space · cert.ssi.gouv.fr
• CERTFR-2021-AVI-589 — Multiples vulnérabilités dans Juniper Junos Space Log Collector · cert.ssi.gouv.fr
• CERTFR-2021-AVI-466 — Multiples vulnérabilités dans les produits Tenable · cert.ssi.gouv.fr
• CERTFR-2020-AVI-691 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

• cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* < 2.2.7
• cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
• 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:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:hospitality_res_3700:*:*:*:*:*:*:*:* ≥ 5.7 ≤ 5.7.6
• cpe:2.3:a:oracle:http_server:12.1.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:outside_in_technology:8.5.4:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:outside_in_technology:8.5.5:*:*:*:*:*:*:*
• cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:* < 8.15.0

Affected products

References

• https://usn.ubuntu.com/4040-1/
• https://usn.ubuntu.com/4040-2/
• https://www.debian.org/security/2019/dsa-4472
• https://seclists.org/bugtraq/2019/Jun/39
• https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
• 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/
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
• https://security.gentoo.org/glsa/201911-08
• https://www.oracle.com/security-alerts/cpuapr2020.html
• https://www.oracle.com/security-alerts/cpuoct2020.html
• https://github.com/libexpat/libexpat/issues/186
• https://github.com/libexpat/libexpat/pull/262
• https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
• https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
• https://security.netapp.com/advisory/ntap-20190703-0001/
• https://support.f5.com/csp/article/K51011533
• https://www.oracle.com/security-alerts/cpuApr2021.html
• https://www.oracle.com/security-alerts/cpuoct2021.html
• https://www.tenable.com/security/tns-2021-11
• https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Sources