CVE-2020-1935
published 2020-02-24CVE-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…
PriorityP430medium4.8CVSS 3.1
AVNACHPRNUINSUCLILAN
EPSS
9.39%
95.4th percentile
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.
Affected
64 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | apache_tomcat | — | — |
| apache | apache_tomcat | — | — |
| apache | apache_tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
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| apache | tomcat | — | — |
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| apache | tomcat | — | — |
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| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
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CVSS provenance
nvdv3.14.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
nvdv2.05.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:N
osv7.5HIGH
vendor_ubuntu7.5HIGH
vendor_apache4.8MEDIUM
vendor_debian4.8MEDIUM
vendor_redhat4.8MEDIUM
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OSV
tomcat8 vulnerabilities
osv·2020-08-04·CVSS 7.5
CVE-2020-13935 [HIGH] tomcat8 vulnerabilities
tomcat8 vulnerabilities
It was discovered that Tomcat incorrectly validated the payload length in
a WebSocket frame. A remote attacker could possibly use this issue to cause
Tomcat to hang, resulting in a denial of service. (CVE-2020-13935)
It was discovered that Tomcat incorrectly handled HTTP header parsing. In
certain environments where Tomcat is located behind a reverse proxy, a
remote attacker could possibly use this issue to perform HTTP Reqest
Smuggling. (CVE-2020-1935)
It was discovered that Tomcat incorrectly handled certain uncommon
PersistenceManager with FileStore configurations. A remote attacker could
possibly use this issue to execute arbitrary code. (CVE-2020-9484)
GHSA
Potential HTTP request smuggling in Apache Tomcat
ghsa·2020-02-28
CVE-2020-1935 [MEDIUM] CWE-444 Potential HTTP request smuggling in Apache Tomcat
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.
OSV
Potential HTTP request smuggling in Apache Tomcat
osv·2020-02-28
CVE-2020-1935 [MEDIUM] Potential HTTP request smuggling in Apache Tomcat
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.
OSV
CVE-2020-1935: In Apache Tomcat 9
osv·2020-02-24·CVSS 4.8
CVE-2020-1935 [MEDIUM] CVE-2020-1935: In Apache Tomcat 9
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.
Ubuntu
Tomcat vulnerabilities
vendor_ubuntu·2020-08-04·CVSS 7.5
CVE-2020-13935 [HIGH] Tomcat vulnerabilities
Title: Tomcat vulnerabilities
Summary: Several security issues were fixed in Tomcat.
It was discovered that Tomcat incorrectly validated the payload length in
a WebSocket frame. A remote attacker could possibly use this issue to cause
Tomcat to hang, resulting in a denial of service. (CVE-2020-13935)
It was discovered that Tomcat incorrectly handled HTTP header parsing. In
certain environments where Tomcat is located behind a reverse proxy, a
remote attacker could possibly use this issue to perform HTTP Reqest
Smuggling. (CVE-2020-1935)
It was discovered that Tomcat incorrectly handled certain uncommon
PersistenceManager with FileStore configurations. A remote attacker could
possibly use this issue to execute arbitrary code. (CVE-2020-9484)
Instructions: In general, a standard system
Red Hat
tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling
vendor_redhat·2020-02-24·CVSS 4.8
CVE-2020-1935 [MEDIUM] CWE-444 tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling
tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling
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.
A flaw was found in Apache Tomcat. The HTTP header parsing code used an approach to end-of-line (EOL) parsing that allowed some invalid HTTP headers to be parsed as valid. This led to the possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrec
Debian
CVE-2020-1935: tomcat9 - 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 HTT...
vendor_debian·2020·CVSS 4.8
CVE-2020-1935 [MEDIUM] CVE-2020-1935: tomcat9 - 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 HTT...
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.
Scope: local
bookworm: resolved (fixed in 9.0.31-1)
bullseye: resolved (fixed in 9.0.31-1)
forky: resolved (fixed in 9.0.31-1)
sid: resolved (fixed in 9.0.31-1)
trixie: resolved (fixed in 9.0.31-1)
Apache
Apache tomcat: CVE-2020-1935
vendor_apache·CVSS 4.8
CVE-2020-1935 [MEDIUM] Apache tomcat: CVE-2020-1935
Apache tomcat: CVE-2020-1935
The HTTP header parsing code used an approach to end-of-line (EOL) 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. This was fixed with commit 8fbe2e96 . This issue was reported to the Apache Tomcat Security Team by @ZeddYu on 25 December 2019. The issue was made public on 24 February 2020. Affects: 8.5.0 to 8.5.50 Low: HTTP Request Smuggling
No detection rules found.
No public exploits indexed.
HackerOne
Tomcat examples available for public, Disclosure Apache Tomcat version, Critical/High/Medium CVE
hackerone·2020-06-11·CVSS 4.3
[MEDIUM] Tomcat examples available for public, Disclosure Apache Tomcat version, Critical/High/Medium CVE
Tomcat examples available for public, Disclosure Apache Tomcat version, Critical/High/Medium CVE
**Summary:**
There are multiple issues found on ███:
1. ███████/examples/ - Apache Tomcat examples are available for public. Multiple issues - session and cookies manipulation, internals IP disclosure.
2. Error page contains information about Apache Tomcat version
3. Reported Tomcat version is vulnerable. Multiple CVEs - critical, high and medium
**Description:**
1. Examples are available by link: ███████/examples/
2. Information disclosure about Apache Tomcat version
3. Vulnerable version Apache Tomcat/8.5.33
https://nvd.nist.gov/vuln/detail/CVE-2020-1938
Base Score: 9.8 CRITICALVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
https://nvd.nist.gov/vuln/detail/CVE-2019-0232
Base Score
Bugzilla
CVE-2020-1935 tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling
bugzilla·2020-02-25·CVSS 4.8
CVE-2020-1935 [MEDIUM] CVE-2020-1935 tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling
CVE-2020-1935 tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling
The HTTP header parsing code used an approach to end-of-line (EOL) 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.
It affects the version of Apache Tomcat 9 from 9.0.0.M1 to 9.0.30, Tomcat from 8 8.5.0 to 8.5.50, and Tomcat 7 7.0.0 to 7.0.99.
Upstream Patches:
https://github.com/apache/tomcat/commit/8bfb0ff / tomcat9
https://github.com/apache/tomcat/commit/8fbe2e9 / tomcat8
https://github.com/apache/tomcat/commit/702bf15 / tomcat7
Discussion:
Ac
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.htmlhttps://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3Ehttps://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6%40%3Cdev.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743%40%3Ccommits.tomee.apache.org%3Ehttps://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18%40%3Cusers.tomcat.apache.org%3Ehttps://lists.debian.org/debian-lts-announce/2020/03/msg00006.htmlhttps://lists.debian.org/debian-lts-announce/2020/05/msg00026.htmlhttps://security.netapp.com/advisory/ntap-20200327-0005/https://usn.ubuntu.com/4448-1/https://www.debian.org/security/2020/dsa-4673https://www.debian.org/security/2020/dsa-4680https://www.oracle.com/security-alerts/cpujan2021.htmlhttps://www.oracle.com/security-alerts/cpujul2020.htmlhttps://www.oracle.com/security-alerts/cpuoct2020.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.htmlhttps://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3Ehttps://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6%40%3Cdev.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743%40%3Ccommits.tomee.apache.org%3Ehttps://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18%40%3Cusers.tomcat.apache.org%3Ehttps://lists.debian.org/debian-lts-announce/2020/03/msg00006.htmlhttps://lists.debian.org/debian-lts-announce/2020/05/msg00026.htmlhttps://security.netapp.com/advisory/ntap-20200327-0005/https://usn.ubuntu.com/4448-1/https://www.debian.org/security/2020/dsa-4673https://www.debian.org/security/2020/dsa-4680https://www.oracle.com/security-alerts/cpujan2021.htmlhttps://www.oracle.com/security-alerts/cpujul2020.htmlhttps://www.oracle.com/security-alerts/cpuoct2020.html
2020-02-24
Published