Krb5: mit krb5 kadmind authenticated memory leak dos in xdr_krb5_tl_data() decode failure
- Exploited
- No known exploitation
- Fix
- No fix listed
- Who is exposed
- Not reported
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 25/100 · provisional
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
The MIT Kerberos 5 (krb5) kadmind administration service has a memory leak that an attacker can trigger remotely by sending crafted RPC requests after logging in with a valid account, which can exhaust memory and cause a denial of service. The flaw occurs because partially decoded data is not freed when the decoding of certain requests fails.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original description
xdr_krb5_tl_data() in lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) does not free partially decoded data on failure, which allows remote authenticated users to cause a denial of service (memory leak in kadmind) via crafted RPC requests that trigger a decode failure.
cve.now Index
- Exploitation0/40No signal
- Exposure3/25Reachable over the network · Unknown: No advisory context yet
- Reach10/20Shipped in major Linux distributions
- Severity6.5/10CVSS 6.5
- No patch5/5No patch listed yet
What would change the score
- Would score about 80 if added to CISA KEV
- Would score about 75 if CISA's SSVC rates exploitation active
- Would score about 44 if advisories confirm default setups are exposed
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- krb5
Version range not reported
- krb5
Version range not reported
- krb5
Version range not reported
- krb5
Version range not reported
- krb5
Version range not reported
- krb5
Version range not reported
Evidence 2
- Report
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.