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cve[email protected]CVE-2020-17527
HistoryDec 03, 2020 - 7:15 p.m.

CVE-2020-17527

2020-12-0319:15:12
CWE-200
web.nvd.nist.gov
580
14
cve-2020-17527
apache tomcat
http/2
vulnerability
information leak
security advisory

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

7.4 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.003 Low

EPSS

Percentile

69.6%

While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests.

Affected configurations

Vulners
NVD
Node
apachetomcatRange10.0.0-M110.0.0-M9
OR
apachetomcatRange9.0.0-M19.0.39
OR
apachetomcatRange8.5.08.5.59

CNA Affected

[
  {
    "product": "Apache Tomcat",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "status": "affected",
        "version": "Apache Tomcat 10 10.0.0-M1 to 10.0.0-M9"
      },
      {
        "status": "affected",
        "version": "Apache Tomcat 9 9.0.0-M1 to 9.0.39"
      },
      {
        "status": "affected",
        "version": "Apache Tomcat 8.5 8.5.0 to 8.5.59"
      }
    ]
  }
]

References

Social References

More

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

7.4 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.003 Low

EPSS

Percentile

69.6%