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    CVE-2011-0284

    Double free vulnerability in the prepare_error_as function in do_as_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 through 1.9, when the PKINIT feature is enabled, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via an e_data field containing typed data.

    Published:Mar 15, 2011
    Last Modified:Apr 11, 2025
    EPS:Mar 20, 2011
    EPSS Score:0.24188
    CVSS Score:7.6

    Affected Products

    Vendor
    Mit
    Product
    Kerberos 5
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-40356 (CVSS 5.9) — In MIT Kerberos 5 (aka krb5) before 1.22.3, there is an integer underflow and resultant out-of-bounds read if …
    CVE-2026-40355 (CVSS 5.9) — In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_ac…
    CVE-2024-37370 (CVSS 7.5) — In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confid…
    CVE-2024-37371 (CVSS 9.1) — In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can cause invalid memory reads during GSS message toke…
    CVE-2024-26462 (CVSS 5.5) — Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.…
    CVE-2024-26461 (CVSS 7.5) — Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/lib/gssapi/krb5/k5sealv3.c.…
    CVE-2024-26458 (CVSS 5.3) — Kerberos 5 (aka krb5) 1.21.2 contains a memory leak in /krb5/src/lib/rpc/pmap_rmt.c.…
    CVE-2025-24528 (CVSS 7.1) — In MIT Kerberos 5 (aka krb5) before 1.22 (with incremental propagation), there is an integer overflow for a la…
    CVE-2023-39975 (CVSS 8.8) — kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an aut…
    CVE-2023-36054 (CVSS 6.5) — lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitia…

    References

    http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056413.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056573.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056579.html
    http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
    http://osvdb.org/71183
    http://secunia.com/advisories/43700
    http://secunia.com/advisories/43760
    http://secunia.com/advisories/43783
    http://secunia.com/advisories/43881
    http://securitytracker.com/id?1025216
    http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-003.txt
    http://www.kb.cert.org/vuls/id/943220
    http://www.mandriva.com/security/advisories?name=MDVSA-2011:048
    http://www.redhat.com/support/errata/RHSA-2011-0356.html
    http://www.securityfocus.com/archive/1/517029/100/0/threaded
    http://www.securityfocus.com/bid/46881
    http://www.ubuntu.com/usn/USN-1088-1
    http://www.vupen.com/english/advisories/2011/0672
    http://www.vupen.com/english/advisories/2011/0673
    http://www.vupen.com/english/advisories/2011/0680
    http://www.vupen.com/english/advisories/2011/0722
    http://www.vupen.com/english/advisories/2011/0763
    https://exchange.xforce.ibmcloud.com/vulnerabilities/66101
    http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056413.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056573.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056579.html
    http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
    http://osvdb.org/71183
    http://secunia.com/advisories/43700
    http://secunia.com/advisories/43760
    http://secunia.com/advisories/43783
    http://secunia.com/advisories/43881
    http://securitytracker.com/id?1025216
    http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-003.txt
    http://www.kb.cert.org/vuls/id/943220
    http://www.mandriva.com/security/advisories?name=MDVSA-2011:048
    http://www.redhat.com/support/errata/RHSA-2011-0356.html
    http://www.securityfocus.com/archive/1/517029/100/0/threaded
    http://www.securityfocus.com/bid/46881
    http://www.ubuntu.com/usn/USN-1088-1
    http://www.vupen.com/english/advisories/2011/0672
    http://www.vupen.com/english/advisories/2011/0673
    http://www.vupen.com/english/advisories/2011/0680
    http://www.vupen.com/english/advisories/2011/0722
    http://www.vupen.com/english/advisories/2011/0763
    https://exchange.xforce.ibmcloud.com/vulnerabilities/66101

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High