CVE-2020-1935
- Source
- https://cve.org/CVERecord?id=CVE-2020-1935
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1935.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-1935
- Aliases
- Downstream
- Related
- Published
- 2020-02-24T22:15:11.980Z
- Modified
- 2026-03-14T10:07:21.773997Z
- Severity
-
- 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743%40%3Ccommits.tomee.apache.org%3E
- https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3E
- https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18%40%3Cusers.tomcat.apache.org%3E
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html
- https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E
- https://usn.ubuntu.com/4448-1/
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html
- https://www.debian.org/security/2020/dsa-4673
- https://security.netapp.com/advisory/ntap-20200327-0005/
- https://www.debian.org/security/2020/dsa-4680
Affected packages
Git / github.com/apache/tomcat
Affected ranges
- Type
- GIT
- Repo
- https://github.com/apache/tomcat
- Events
-
IntroducedLast affectedIntroducedLast affectedIntroducedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affected
- Database specific
{ "versions": [ { "introduced": "7.0.0" }, { "last_affected": "7.0.99" }, { "introduced": "8.5.0" }, { "last_affected": "8.5.50" }, { "introduced": "9.0.0" }, { "last_affected": "9.0.30" }, { "introduced": "0" }, { "last_affected": "9.0.0-NA" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone1" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone10" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone11" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone12" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone13" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone14" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone15" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone16" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone17" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone18" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone19" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone2" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone20" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone21" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone22" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone23" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone24" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone25" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone26" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone27" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone3" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone4" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone5" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone6" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone7" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone8" }, { "introduced": "0" }, { "last_affected": "9.0.0-milestone9" }, { "introduced": "0" }, { "last_affected": "9.0" }, { "introduced": "0" }, { "last_affected": "10.0" } ] }
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.1"
}
]
},
{
"events": [
{
"introduced": "3.0.0"
},
{
"last_affected": "3.1.3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "6.2.1.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.3.3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.3.5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.3.6"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.1.1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.2.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.2.1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "10.0.1.4.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.0.1.2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "7.3.3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "4.2.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "4.2.1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "11.1.2.4"
}
]
},
{
"events": [
{
"introduced": "17.1"
},
{
"last_affected": "17.3"
}
]
},
{
"events": [
{
"introduced": "4.0.0"
},
{
"last_affected": "4.0.12"
}
]
},
{
"events": [
{
"introduced": "8.0.0"
},
{
"last_affected": "8.0.20"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "20.5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "6.3.7"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "12.2.0.1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18c"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "19c"
}
]
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1935.json"