CVE-2020-12692
MEDIUM
5.4
CVSS Score
Published: May 6, 2020 at 11:42 PM UTC
Updated: June 17, 2026 at 02:52 AM UTC
2 products affected across 2 vendorsUbuntu LinuxKeystone
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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.7%
Description
An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The EC2 API doesn't have a signature TTL check for AWS Signature V4. An attacker can sniff the Authorization header, and then use it to reissue an OpenStack token an unlimited number of times.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%v < 15.0.116.0.0
Affected range stops below 15.0.1, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (5)
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/05/07/1x_refsource_MISCThird Party Advisory
Source: [email protected]
https://bugs.launchpad.net/keystone/+bug/1872737x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://security.openstack.org/ossa/OSSA-2020-003.htmlVendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4480-1/x_refsource_MISCMailing ListThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2020/05/06/4CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-294CWE-347
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