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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2019-16782 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00016.html Third Party Advisory 
http://www.openwall.com/lists/oss-security/2019/12/18/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2019/12/18/3 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2019/12/19/3 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2020/04/08/1 Mailing List  Patch  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2020/04/09/2 Mailing List  Third Party Advisory 
https://github.com/rack/rack/commit/7fecaee81f59926b6e1913511c90650e76673b38 Patch  Third Party Advisory 
https://github.com/rack/rack/security/advisories/GHSA-hrqr-hxpp-chr3 Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZXMWILCICQLA2BYSP6I2CRMUG53YBLX/

Weakness Enumeration

CWE-ID CWE Name Source
CWE-203 Observable Discrepancy cwe source acceptance level NIST  
CWE-208 Observable Timing Discrepancy GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

10 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-16782
NVD Published Date:
12/18/2019
NVD Last Modified:
11/06/2023
Source:
GitHub, Inc.