High severity · published Mar 1, 2021
CVE-2021-25122
Apache Tomcat h2c request mix-up
7.5
CVSS
18.1%
EPSS
No
On KEV
Description
When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)18.1% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tomcat · Apache
Apache Tomcat 10 before 10.0.2; Apache Tomcat 9 before 9.0.42; Apache Tomcat 8.5 before 8.5.62 · source: vendor, NVD
AP
Agile Product Lifecycle Management · Oracle
9.3.3; 9.3.6 · source: NVD
CC
Communications Cloud Native Core Policy · Oracle
1.14.0 · source: NVD
CC
Communications Cloud Native Core Security Edge Protection Proxy · Oracle
1.6.0 · source: NVD
CI
Communications Instant Messaging Server · Oracle
10.0.1.5.0 · source: NVD
DA
Database · Oracle
12.2.0.1; 19c; 21c · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
GS
Graph Server And Client · Oracle
before 21.3.0; 21.3.0 · source: NVD
IE
Instantis Enterprisetrack · Oracle
17.1; 17.2; 17.3 · source: NVD
MF
Managed File Transfer · Oracle
12.2.1.3.0; 12.2.1.4.0 · source: NVD
ME
Mysql Enterprise Monitor · Oracle
through 8.0.23 · source: NVD
SU
Siebel UI Framework · Oracle
through 21.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-25122
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-25122
Mailing List
http://www.openwall.com/lists/oss-security/2021/03/01/1
lists.apache.org
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.apache.org%3E
Mailing List
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cdev.tomcat.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cusers.tomcat.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/rcd90bf36b1877e1310b87ecd14ed7bbb15da52b297efd9f0e7253a3b%40%3Cusers.tomcat.apache.org%3E
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