Login Request a demo
High severity · published Aug 7, 2020
CVE-2020-9490
Apache HTTP Server versions 2.4.20 to 2.4.43
7.5
CVSS
88.8%
EPSS
No
On KEV
Description
Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)88.8% · higher than 100% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HS
HTTP Server · Apache
2.4.20 before 2.4.46 · source: NVD
CE
Communications Element Manager · Oracle
8.2.0 through 8.2.2 · source: NVD
CS
Communications Session Report Manager · Oracle
8.2.0 through 8.2.2 · source: NVD
CS
Communications Session Route Manager · Oracle
8.2.0 through 8.2.2 · source: NVD
DL
Debian Linux · Debian
10.0 · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
EL
Enterprise Linux Eus · Redhat
8.1; 8.2; 8.4; 8.6 · source: NVD
EL
Enterprise Linux For Ibm Z Systems · Redhat
8.0 · source: NVD
EL
Enterprise Linux For Ibm Z Systems Eus · Redhat
8.1; 8.2; 8.4; 8.6 · source: NVD
EL
Enterprise Linux For Power Little Endian · Redhat
8.0 · source: NVD
EL
Enterprise Linux For Power Little Endian Eus · Redhat
8.1; 8.2; 8.4; 8.6 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
8.2; 8.4; 8.6 · source: NVD
Affected product
HS
HTTP Server
Apache
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-9490
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-9490
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html
Third Party Advisory
http://packetstormsecurity.com/files/160392/Apache-2.4.43-mod_http2-Memory-Corruption.html
Vendor Advisory
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-9490
lists.apache.org
https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E
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