ftpd.c in the GSS-API FTP daemon in MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.1 and earlier does not check the krb5_setegid re
ftpd.c in the GSS-API FTP daemon in MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.1 and earlier does not check the krb5_setegid return value, which allows remote authenticated users to bypass intended group access restrictions, and create, overwrite, delete, or read files, via standard FTP commands, related to missing autoconf tests in a configure script.
- Published
- Jul 11, 2011
- Updated
- Jun 16, 2026
- EPSS
- 3.9% · 90th percentile
- CWE
- CWE-269
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Report tools
Action score
27
Monitor
Low priority for now.
- CVSS
- 26 / 40 · 6.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.9%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| mit | krb5-appl | cpe:2.3:a:mit:krb5-appl |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| opensuse | opensuse | cpe:2.3:o:opensuse:opensuse |
| suse | linux enterprise desktop | cpe:2.3:o:suse:linux_enterprise_desktop |
| suse | linux enterprise server | cpe:2.3:o:suse:linux_enterprise_server |
| suse | linux enterprise software development kit | cpe:2.3:o:suse:linux_enterprise_software_development_kit |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux5.0
- debian debian linux6.0
- fedoraproject fedora14
- fedoraproject fedora15
- mit krb5-applbefore 1.0.1
- opensuse opensuse11.3
- opensuse opensuse11.4
- suse linux enterprise desktop10
- suse linux enterprise desktop11
- suse linux enterprise server10
- suse linux enterprise server11
- suse linux enterprise software development kit10
- suse linux enterprise software development kit11
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:6.0 | krb5-appl | before 1:1.0.1-1.1 | 1:1.0.1-1.1 |
| Red Hat:enterprise_linux:5::client | krb5-libs | before 0:1.6.1-70.el5 | 0:1.6.1-70.el5 |
| Red Hat:enterprise_linux:5::client | krb5-workstation | before 0:1.6.1-70.el5 | 0:1.6.1-70.el5 |
| Red Hat:enterprise_linux:5::client_workstation | krb5 | before 0:1.6.1-70.el5 | 0:1.6.1-70.el5 |
| Red Hat:enterprise_linux:5::client_workstation | krb5-debuginfo | before 0:1.6.1-70.el5 | 0:1.6.1-70.el5 |
| Red Hat:enterprise_linux:5::client_workstation | krb5-devel | before 0:1.6.1-70.el5 | 0:1.6.1-70.el5 |
| Red Hat:enterprise_linux:5::client_workstation | krb5-server | before 0:1.6.1-70.el5 | 0:1.6.1-70.el5 |
| Red Hat:enterprise_linux:5::client_workstation | krb5-server-ldap | before 0:1.6.1-70.el5 | 0:1.6.1-70.el5 |
| Red Hat:enterprise_linux:6::server | krb5-appl | before 0:1.0.1-2.el6_1.1 | 0:1.0.1-2.el6_1.1 |
| Red Hat:enterprise_linux:6::server | krb5-appl-clients | before 0:1.0.1-2.el6_1.1 | 0:1.0.1-2.el6_1.1 |
| Red Hat:enterprise_linux:6::server | krb5-appl-debuginfo | before 0:1.0.1-2.el6_1.1 | 0:1.0.1-2.el6_1.1 |
| Red Hat:enterprise_linux:6::server | krb5-appl-servers | before 0:1.0.1-2.el6_1.1 | 0:1.0.1-2.el6_1.1 |
Same product
mit: all recordsOther highest-scoring records for the same primary product.
- CVE-2011-4862Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2 and 68This week
- CVE-2019-25018In the rcp client in MIT krb5-appl through 1.0.3, malicious servers could bypass intended access restrictions via the filename of .30Monitor
- CVE-2019-25017An issue was discovered in rcp in MIT krb5-appl through 1.0.3.23Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:krb5-appl | 1:1.0.1-1.1 · Debian:6.0 | Package registry (OSV) |
| red hat:krb5 | 0:1.6.1-70.el5 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:krb5-appl | 0:1.0.1-2.el6_1.1 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:krb5-appl-clients | 0:1.0.1-2.el6_1.1 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:krb5-appl-debuginfo | 0:1.0.1-2.el6_1.1 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:krb5-appl-servers | 0:1.0.1-2.el6_1.1 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:krb5-debuginfo | 0:1.6.1-70.el5 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:krb5-devel | 0:1.6.1-70.el5 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:krb5-libs | 0:1.6.1-70.el5 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:krb5-server | 0:1.6.1-70.el5 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:krb5-server-ldap | 0:1.6.1-70.el5 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:krb5-workstation | 0:1.6.1-70.el5 · Red Hat:enterprise_linux:5::client | Package 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.
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 researchersFinders, 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
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
CWE-269 · Improper Privilege ManagementCVSS vector
AV:N/AC:L/Au:S/C:P/I:P/A:P
nvd-primary
Root cause
To simplify setup, a service account is granted broad, cluster-wide permissions. The principle of least privilege is skipped during installation.
The bug in code
The whole CWE-269 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
kind: ClusterRolerules: - apiGroups: ["*"] resources: ["*"] verbs: ["*"]Fixed
kind: Rolemetadata: namespace: lodos-systemrules: - apiGroups: ["apps"] resources: ["deployments"] verbs: ["get", "list", "update"]Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.fedoraproject.org/pipermail/package-announce/2011-July/062681.html
- lists.fedoraproject.org/pipermail/package-announce/2011-July/062699.html
- lists.opensuse.org/opensuse-security-announce/2011-10/msg00009.html
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00005.html
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00011.html
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00014.html
- secunia.com/advisories/45145
- secunia.com/advisories/45157
- secunia.com/advisories/48101
- securityreason.com/securityalert/8301
- web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-005.txt
- www.debian.org/security/2011/dsa-2283
- www.mandriva.com/security/advisories?name=MDVSA-2011:117
- www.osvdb.org/73617
- www.redhat.com/support/errata/RHSA-2011-0920.html
- www.securityfocus.com/archive/1/518733/100/0/threaded
- www.securityfocus.com/bid/48571
Vendor advisories and official records. Exploit/PoC links are deliberately left out.