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).
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- Canonical / Ubuntu Linux19.04 – 19.04
- Canonical / Ubuntu Linux12.04 – 12.04
- Canonical / Ubuntu Linux14.04 – 14.04
- Canonical / Ubuntu Linux16.04 – 16.04
- Canonical / Ubuntu Linux18.04 – 18.04
- Canonical / Ubuntu Linux18.10 – 18.10
- Debian / debian_linux8.0 – 8.0
- Debian / debian_linux9.0 – 9.0
- fedoraproject / fedora29 – 29
- fedoraproject / fedora30 – 30
- libexpat project / libexpat2.2.7
- openSUSE / Leap15.0 – 15.0
- openSUSE / Leap15.1 – 15.1
- oracle / hospitality_res_37005.7 – 5.7.6
- oracle / http_server12.1.3.0 – 12.1.3.0
- oracle / http_server12.2.1.4.0 – 12.2.1.4.0
- oracle / outside_in_technology8.5.4 – 8.5.4
- oracle / outside_in_technology8.5.5 – 8.5.5
- tenable / Nessus8.15.0
References
- VENDOR_ADVISORYhttps://usn.ubuntu.com/4040-1/
- VENDOR_ADVISORYhttps://usn.ubuntu.com/4040-2/
- VENDOR_ADVISORYhttps://www.debian.org/security/2019/dsa-4472
- MAILING_LISThttps://seclists.org/bugtraq/2019/Jun/39
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
- MAILING_LISThttp://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
- MISChttps://security.gentoo.org/glsa/201911-08
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuapr2020.html
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2020.html
- MISChttps://github.com/libexpat/libexpat/issues/186
- PATCHhttps://github.com/libexpat/libexpat/pull/262
- PATCHhttps://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
- MISChttps://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
- MISChttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
- MISChttps://security.netapp.com/advisory/ntap-20190703-0001/
- MISChttps://support.f5.com/csp/article/K51011533
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuApr2021.html
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2021.html
- MISChttps://www.tenable.com/security/tns-2021-11
Updated 10m ago · 8 sources