CVE-2019-16782

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Source
https://nvd.nist.gov/vuln/detail/CVE-2019-16782
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16782.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2019-16782
Aliases
Related
Published
2019-12-18T20:15:16Z
Modified
2024-05-30T02:02:09.491006Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

There's a possible information leak / session hijack vulnerability in Rack (RubyGem rack). This vulnerability is patched in versions 1.6.12 and 2.0.8. Attackers may be able to find and hijack sessions by using timing attacks targeting the session id. Session ids are usually stored and indexed in a database that uses some kind of scheme for speeding up lookups of that session id. By carefully measuring the amount of time it takes to look up a session, an attacker may be able to find a valid session id and hijack the session. The session id itself may be generated randomly, but the way the session is indexed by the backing store does not use a secure comparison.

References

Affected packages

Git / github.com/rack/rack

Affected ranges

Type
GIT
Repo
https://github.com/rack/rack
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed

Affected versions

0.*

0.1
0.2
0.3

1.*

1.0
1.1
1.2
1.2.1
1.3.0
1.3.0.beta
1.3.0.beta2
1.4.0
1.4.1
1.5.0
1.5.1
1.5.2
1.6.0
1.6.0.beta
1.6.0.beta2

2.*

2.0.0
2.0.0.alpha
2.0.0.rc1
2.0.1