Apache Tomcat: Request header mix-up between HTTP/2 streams
CVSS score
7.5
EPSS probability
%24.6
Risk score
1.8
Published
5 y ago
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Vulnerability description
DayBreach CVE AI Research
CVE-2020-17527 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
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.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2020-17527 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Apache Software Foundation | Apache Tomcat | View |
| 2 | apache | tomcat | View |
| 3 | apache | tomcat | View |
| 4 | apache | tomcat | View |
| 5 | apache | tomcat | View |
| 6 | apache | tomcat | View |
| 7 | apache | tomcat | View |
| 8 | apache | tomcat | View |
| 9 | apache | tomcat | View |
| 10 | apache | tomcat | View |
| 11 | apache | tomcat | View |
| 12 | netapp | element plug-in | View |
| 13 | netapp | oncommand system manager | View |
| 14 | debian | debian linux | View |
| 15 | debian | debian linux | View |
| 16 | oracle | blockchain platform | View |
| 17 | oracle | communications cloud native core binding support function | View |
| 18 | oracle | communications cloud native core policy | View |
| 19 | oracle | communications instant messaging server | View |
| 20 | oracle | instantis enterprisetrack | View |
| 21 | oracle | instantis enterprisetrack | View |
| 22 | oracle | instantis enterprisetrack | View |
| 23 | oracle | mysql enterprise monitor | View |
| 24 | oracle | sd-wan edge | View |
| 25 | oracle | workload manager | View |
| 26 | oracle | workload manager | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 7.5 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD |
| 5.0 | CVSS V2 | — | AV:N/AC:L/Au:N/C:P/I:N/A:N | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-17527 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-17527 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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