Medium severity · published Feb 24, 2020
CVE-2020-1935
In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP…
4.8
CVSS
9.4%
EPSS
No
On KEV
Description
In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)9.4% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tomcat · Apache
Apache Tomcat 9.0.0.M1 to 9.0.30; 8.5.0 to 8.5.50; 7.0.0 to 7.0.99 · source: vendor, NVD
AE
Agile Engineering Data Management · Oracle
6.2.1.0 · source: NVD
AP
Agile Product Lifecycle Management · Oracle
9.3.3; 9.3.5; 9.3.6 · source: NVD
CE
Communications Element Manager · Oracle
8.1.1; 8.2.0; 8.2.1 · source: NVD
CI
Communications Instant Messaging Server · Oracle
10.0.1.4.0 · source: NVD
DA
Data Availability Services · Netapp
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
8.0; 9.0; 10.0 · source: NVD
HS
Health Sciences Empirica Inspections · Oracle
1.0.1.2 · source: NVD
HS
Health Sciences Empirica Signal · Oracle
7.3.3 · source: NVD
HG
Hospitality Guest Access · Oracle
4.2.0; 4.2.1 · source: NVD
HI
Hyperion Infrastructure Technology · Oracle
11.1.2.4 · source: NVD
IE
Instantis Enterprisetrack · Oracle
17.1 through 17.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-1935
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-1935
Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html
Mailing List
https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75%40%3Cusers.tomcat.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919%40%3Cusers.tomcat.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1%40%3Cusers.tomcat.apache.org%3E
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