A vulnerability, which was classified as critical, has been found in Apache Tomcat up to 7.0.99/8.5.50/9.0.30 (Application Server Software). Affected by this issue is some unknown processing of the component Header Parsing. The manipulation as part of a HTTP Request leads to a request smuggling vulnerability. Using CWE to declare the problem leads to CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was shared 02/24/2020 (Website). The advisory is shared for download at lists.apache.org. This vulnerability is handled as CVE-2020-1935 since 12/02/2019. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/25/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Productinfo

Type

• Application Server Software

Vendor

• Apache

Name

• Tomcat

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12
• 7.0.13
• 7.0.14
• 7.0.15
• 7.0.16
• 7.0.17
• 7.0.18
• 7.0.19
• 7.0.20
• 7.0.21
• 7.0.22
• 7.0.23
• 7.0.24
• 7.0.25
• 7.0.26
• 7.0.27
• 7.0.28
• 7.0.29
• 7.0.30
• 7.0.31
• 7.0.32
• 7.0.33
• 7.0.34
• 7.0.35
• 7.0.36
• 7.0.37
• 7.0.38
• 7.0.39
• 7.0.40
• 7.0.41
• 7.0.42
• 7.0.43
• 7.0.44
• 7.0.45
• 7.0.46
• 7.0.47
• 7.0.48
• 7.0.49
• 7.0.50
• 7.0.51
• 7.0.52
• 7.0.53
• 7.0.54
• 7.0.55
• 7.0.56
• 7.0.57
• 7.0.58
• 7.0.59
• 7.0.60
• 7.0.61
• 7.0.62
• 7.0.63
• 7.0.64
• 7.0.65
• 7.0.66
• 7.0.67
• 7.0.68
• 7.0.69
• 7.0.70
• 7.0.71
• 7.0.72
• 7.0.73
• 7.0.74
• 7.0.75
• 7.0.76
• 7.0.77
• 7.0.78
• 7.0.79
• 7.0.80
• 7.0.81
• 7.0.82
• 7.0.83
• 7.0.84
• 7.0.85
• 7.0.86
• 7.0.87
• 7.0.88
• 7.0.89
• 7.0.90
• 7.0.91
• 7.0.92
• 7.0.93
• 7.0.94
• 7.0.95
• 7.0.96
• 7.0.97
• 7.0.98
• 7.0.99
• 8.5.0
• 8.5.1
• 8.5.2
• 8.5.3
• 8.5.4
• 8.5.5
• 8.5.6
• 8.5.7
• 8.5.8
• 8.5.9
• 8.5.10
• 8.5.11
• 8.5.12
• 8.5.13
• 8.5.14
• 8.5.15
• 8.5.16
• 8.5.17
• 8.5.18
• 8.5.19
• 8.5.20
• 8.5.21
• 8.5.22
• 8.5.23
• 8.5.24
• 8.5.25
• 8.5.26
• 8.5.27
• 8.5.28
• 8.5.29
• 8.5.30
• 8.5.31
• 8.5.32
• 8.5.33
• 8.5.34
• 8.5.35
• 8.5.36
• 8.5.37
• 8.5.38
• 8.5.39
• 8.5.40
• 8.5.41
• 8.5.42
• 8.5.43
• 8.5.44
• 8.5.45
• 8.5.46
• 8.5.47
• 8.5.48
• 8.5.49
• 8.5.50
• 9.0.0
• 9.0.1
• 9.0.2
• 9.0.3
• 9.0.4
• 9.0.5
• 9.0.6
• 9.0.7
• 9.0.8
• 9.0.9
• 9.0.10
• 9.0.11
• 9.0.12
• 9.0.13
• 9.0.14
• 9.0.15
• 9.0.16
• 9.0.17
• 9.0.18
• 9.0.19
• 9.0.20
• 9.0.21
• 9.0.22
• 9.0.23
• 9.0.24
• 9.0.25
• 9.0.26
• 9.0.27
• 9.0.28
• 9.0.29
• 9.0.30

License

• open-source

CPE 2.3info

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CPE 2.2info

• 🔍
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