CVE-2017-7562
MEDIUM
6.5
CVSS Score
Published: July 26, 2018 at 03:00 PM UTC
Updated: June 17, 2026 at 01:24 AM UTC
5 products affected across 2 vendorsEnterprise LinuxEnterprise Linux DesktopEnterprise Linux Server
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Severity
MEDIUM6.5
Exploit prediction
EPSS 3%
Description
An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
1.0 ≤ v < 1.16.11.16.1
Affected range stops below 1.16.1, so it looks safe — our inference, not a vendor statement
95%
Enterprise Linux Server· Red Hatrubygems
95%95%
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (7)
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/100511Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:0666x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://github.com/krb5/krb5/pull/694x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627dCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-287CWE-295
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