7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 High
AI Score
Confidence
High
7.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
0.609 Medium
EPSS
Percentile
97.7%
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).
lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
github.com/libexpat/libexpat/issues/186
github.com/libexpat/libexpat/pull/262
github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
lists.debian.org/debian-lts-announce/2019/06/msg00028.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
seclists.org/bugtraq/2019/Jun/39
security.gentoo.org/glsa/201911-08
security.netapp.com/advisory/ntap-20190703-0001/
support.f5.com/csp/article/K51011533
usn.ubuntu.com/4040-1/
usn.ubuntu.com/4040-2/
www.debian.org/security/2019/dsa-4472
www.oracle.com/security-alerts/cpuapr2020.html
www.oracle.com/security-alerts/cpuApr2021.html
www.oracle.com/security-alerts/cpuoct2020.html
www.oracle.com/security-alerts/cpuoct2021.html
www.tenable.com/security/tns-2021-11
More
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 High
AI Score
Confidence
High
7.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
0.609 Medium
EPSS
Percentile
97.7%