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NVD / CVE Program· CNA mitre

CVE-2007-5971: Double free vulnerability in the gss_krb5int_make_seal_token_v3 function in lib/gssapi/krb5/k5sealv3.c in MIT Kerberos 5 (krb5) has unknown

Noroxi assessment

Priority: Monitor (action score 27/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.37% (FIRST EPSS).
  • Fixed version: krb5 (Debian:12) 1.6.dfsg.4~beta1-1; krb5 (openSUSE:Tumbleweed) 1.19.2-2.2; krb5 (Red Hat:enterprise_linux:4::as) 0:1.3.4-54.el4_6.1.

Low priority for now. Upgrade to krb5 (Debian:12) 1.6.dfsg.4~beta1-1; krb5 (openSUSE:Tumbleweed) 1.19.2-2.2; krb5 (Red Hat:enterprise_linux:4::as) 0:1.3.4-54.el4_6.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Double free vulnerability in the gss_krb5int_make_seal_token_v3 function in lib/gssapi/krb5/k5sealv3.c in MIT Kerberos 5 (krb5) has unknown impact and attack vectors.

MediumCVSS 6.9 · v2.0—No exploit Fix available
Published
Dec 5, 2007
Updated
Jun 16, 2026
EPSS
0.3% · 30th percentile

Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
27 / 40 · 6.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mitkerberos 5
applemac os x
applemac os x server

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mit kerberos 5up to 1.6.3_kdc inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12krb5before 1.6.dfsg.4~beta1-11.6.dfsg.4~beta1-1
openSUSE:Tumbleweedkrb5before 1.19.2-2.21.19.2-2.2
Red Hat:enterprise_linux:4::askrb5before 0:1.3.4-54.el4_6.10:1.3.4-54.el4_6.1
Red Hat:enterprise_linux:4::askrb5-debuginfobefore 0:1.3.4-54.el4_6.10:1.3.4-54.el4_6.1
Red Hat:enterprise_linux:4::askrb5-develbefore 0:1.3.4-54.el4_6.10:1.3.4-54.el4_6.1
Red Hat:enterprise_linux:4::askrb5-libsbefore 0:1.3.4-54.el4_6.10:1.3.4-54.el4_6.1
Red Hat:enterprise_linux:4::askrb5-serverbefore 0:1.3.4-54.el4_6.10:1.3.4-54.el4_6.1
Red Hat:enterprise_linux:4::askrb5-workstationbefore 0:1.3.4-54.el4_6.10:1.3.4-54.el4_6.1
Red Hat:enterprise_linux:5::clientkrb5-libsbefore 0:1.6.1-17.el5_1.10:1.6.1-17.el5_1.1
Red Hat:enterprise_linux:5::clientkrb5-workstationbefore 0:1.6.1-17.el5_1.10:1.6.1-17.el5_1.1
Red Hat:enterprise_linux:5::client_workstationkrb5before 0:1.6.1-17.el5_1.10:1.6.1-17.el5_1.1
Red Hat:enterprise_linux:5::client_workstationkrb5-debuginfobefore 0:1.6.1-17.el5_1.10:1.6.1-17.el5_1.1
Red Hat:enterprise_linux:5::client_workstationkrb5-develbefore 0:1.6.1-17.el5_1.10:1.6.1-17.el5_1.1
Red Hat:enterprise_linux:5::client_workstationkrb5-serverbefore 0:1.6.1-17.el5_1.10:1.6.1-17.el5_1.1

Same product

mit: all records

Other highest-scoring records for the same primary product.

  • CVE-2007-0956The telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass authentication and gain system access via a username
    49Plan
  • CVE-2011-0285The process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT Kerberos 5 (aka krb5) 1.7 through 1.9
    46Plan
  • CVE-2001-0247Buffer overflows in BSD-based FTP servers allows remote attackers to execute arbitrary commands via a long pattern string containing a {} se
    46Plan

Published before and after this one in the same product

  • ← EarlierCVE-2007-5901Dec 5, 2007 · Use-after-free vulnerability in the gss_indicate_mechs function in lib/gssapi/mechglue/g_initialize.c in MIT Kerberos 5 (krb5) has unknown i
    27Monitor
  • ← EarlierCVE-2007-5902Dec 5, 2007 · Integer overflow in the svcauth_gss_get_principal function in lib/rpc/svc_auth_gss.c in MIT Kerberos 5 (krb5) allows remote attackers to hav
    42Plan
  • Later →CVE-2007-5972Dec 5, 2007 · Double free vulnerability in the krb5_def_store_mkey function in lib/kdb/kdb_default.c in MIT Kerberos 5 (krb5) 1.5 has unknown impact and r
    37Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:krb51.6.dfsg.4~beta1-1 · Debian:12Package registry (OSV)
opensuse:krb51.19.2-2.2 · openSUSE:TumbleweedPackage registry (OSV)
red hat:krb50:1.6.1-17.el5_1.1 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:krb5-debuginfo0:1.6.1-17.el5_1.1 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:krb5-devel0:1.6.1-17.el5_1.1 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:krb5-libs0:1.6.1-17.el5_1.1 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:krb5-server0:1.6.1-17.el5_1.1 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:krb5-workstation0:1.6.1-17.el5_1.1 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

    If successful

    Confidentiality
    C · data can be read
    Integrity
    C · data or configuration can be modified
    Availability
    C · the service can be disrupted
    Attack complexity
    M
    Confidentiality impact
    C
    Integrity impact
    C
    Availability impact
    C

    Weakness class (CWE)

    CWE-399 · Resource Management Errors

    CVSS vector

    AV:L/AC:M/Au:N/C:C/I:C/A:C

    nvd-primary

    Attack context

    MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

    MITRE has no CAPEC/ATT&CK mapping for this CWE.

    Change log

    1. Fix✗ → ✓

    For records you follow, these changes also arrive as notifications. →

    References

    Show all references (19 more)

    Vendor advisories and official records. Exploit/PoC links are deliberately left out.

    All records