CVE detail
CVE-2017-11103
Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in 'enc_part' instead of the unencrypted version stored in 'ticket'. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 11.0 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
2 source links · newest first
A 20-year-old authentication bypass vulnerability affecting some implementations of the Kerberos protocol has been patched in Windows, Linux and BSD operating systems.
newswww.securityweek.comJul 14, 2017, 11:04 AMA 20 years-old vulnerability in Kerberos, dubbed Orpheus’ Lyre, was parched this week for both Microsoft and Linux distros. A 20 years-old vulnerability in Kerberos was parched this week for both Microsoft and Linux distros. The vulnerability dubbed Orpheus’ Lyre has been found three months ago by Jeffrey Altman, founder of AuriStor, and Viktor Dukhovni and Nicolas Williams from […]
newssecurityaffairs.comJul 14, 2017, 9:22 AM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
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