Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-qxf4-chvg-4r8r
Advisory ID github_osv/GHSA-qxf4-chvg-4r8r
Aliases CVE-2020-1935
Summary Potential HTTP request smuggling in Apache Tomcat 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.
Status Published
Exploitability 0.5
Weighted Severity 4.3
Risk 2.1
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html
https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75@%3Cusers.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919@%3Cusers.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78@%3Ccommits.tomee.apache.org%3E
https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1@%3Cusers.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6@%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7@%3Cusers.tomcat.apache.org%3E
https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743@%3Ccommits.tomee.apache.org%3E
https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18@%3Cusers.tomcat.apache.org%3E
https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html
https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html
https://security.netapp.com/advisory/ntap-20200327-0005
https://usn.ubuntu.com/4448-1
https://www.debian.org/security/2020/dsa-4673
https://www.debian.org/security/2020/dsa-4680
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.oracle.com/security-alerts/cpuoct2020.html
cpujul2020.html Other https://www.oracle.com/security-alerts/cpujul2020.html
CVE-2020-1935 https://nvd.nist.gov/vuln/detail/CVE-2020-1935
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/02/GHSA-qxf4-chvg-4r8r/GHSA-qxf4-chvg-4r8r.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.