Bug 1220770 (CVE-2024-26458)

Summary:	VUL-0: CVE-2024-26458: krb5: memory leak at /krb5/src/lib/rpc/pmap_rmt.c
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	SUSE Samba Team <samba>
Status:	NEW ---	QA Contact:	Security Team bot <security-team>
Severity:	Major
Priority:	P3 - Medium	CC:	abergmann, camila.matos, davide.benini, samba-maintainers, scabrero, security-team, stoyan.manolov
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/395561/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-26458:7.5:(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-03-01 11:16:14 UTC

Kerberos 5 (aka krb5) 1.21.2 contains a memory leak in /krb5/src/lib/rpc/pmap_rmt.c.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-26458
https://bugzilla.redhat.com/show_bug.cgi?id=2266731
https://www.cve.org/CVERecord?id=CVE-2024-26458
https://github.com/LuMingYinDetect/krb5_defects/blob/main/krb5_detect_1.md

Comment 1 Alexander Bergmann 2024-03-04 08:31:37 UTC

https://mailman.mit.edu/pipermail/kerberos/2024-March/023095.html

On 3/1/24 07:13, Alexander Bergmann via Kerberos wrote:
> We got notified via NVD about 3 new security issues. Right now there
> seams to be no upstream reference. Could someone please comment on this?
> 
> CVE-2024-26458: Memory leak at /krb5/src/lib/rpc/pmap_rmt.c
> CVE-2024-26461: Memory leak at /krb5/src/lib/gssapi/krb5/k5sealv3.c
> CVE-2024-26462: Memory leak at /krb5/src/kdc/ndr.c

These CVEs appear to be the result of someone running a static analysis 
tool over the MIT krb5 code base and assigning CVEs to each resulting 
defect, without performing any additional impact analysis or upstream 
consultation.

The pmap_rmt.c leak only affects pmap_rmtcall(), which is unused by the 
rest of the krb5 code base and likely unused by anyone else.

The k5sealv3.c leak affects an encoding function, and happens on a 
bounds check which likely cannot be triggered with any choice of 
memory-valid API inputs.  (The bounds check was itself introduced to 
quash a different static analysis defect.)

The ndr.c leak also affects an encoding function, and triggers if the 
input contains invalid UTF-8.  This one might be triggerable by a 
request (though it may require elevated privilege), but I would not have 
requested a CVE for it myself.

I will fix these on the mainline, but I only expect to assign a ticket 
to the third one.

Comment 4 Maintenance Automation 2024-03-26 12:36:13 UTC

SUSE-SU-2024:0997-1: An update that solves three vulnerabilities can now be installed.

Category: security (important)
Bug References: 1220770, 1220771, 1220772
CVE References: CVE-2024-26458, CVE-2024-26461, CVE-2024-26462
Maintenance Incident: [SUSE:Maintenance:33037](https://smelt.suse.de/incident/33037/)
Sources used:
openSUSE Leap 15.5 (src):
 krb5-mini-1.20.1-150500.3.6.1, krb5-1.20.1-150500.3.6.1
SUSE Linux Enterprise Micro 5.5 (src):
 krb5-1.20.1-150500.3.6.1
Basesystem Module 15-SP5 (src):
 krb5-1.20.1-150500.3.6.1
Server Applications Module 15-SP5 (src):
 krb5-1.20.1-150500.3.6.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 5 Maintenance Automation 2024-03-26 16:30:05 UTC

SUSE-SU-2024:0999-1: An update that solves two vulnerabilities can now be installed.

Category: security (important)
Bug References: 1220770, 1220771
CVE References: CVE-2024-26458, CVE-2024-26461
Maintenance Incident: [SUSE:Maintenance:33040](https://smelt.suse.de/incident/33040/)
Sources used:
SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (src):
 krb5-1.16.3-150100.3.33.1
SUSE Linux Enterprise Server for SAP Applications 15 SP2 (src):
 krb5-1.16.3-150100.3.33.1
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2 (src):
 krb5-1.16.3-150100.3.33.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 7 Maintenance Automation 2024-03-27 08:30:08 UTC

SUSE-SU-2024:1001-1: An update that solves two vulnerabilities can now be installed.

Category: security (important)
Bug References: 1220770, 1220771
CVE References: CVE-2024-26458, CVE-2024-26461
Maintenance Incident: [SUSE:Maintenance:33039](https://smelt.suse.de/incident/33039/)
Sources used:
SUSE Enterprise Storage 7.1 (src):
 krb5-1.19.2-150300.16.1
SUSE Linux Enterprise Micro 5.1 (src):
 krb5-1.19.2-150300.16.1
SUSE Linux Enterprise Micro 5.2 (src):
 krb5-1.19.2-150300.16.1
SUSE Linux Enterprise Micro for Rancher 5.2 (src):
 krb5-1.19.2-150300.16.1
openSUSE Leap 15.3 (src):
 krb5-1.19.2-150300.16.1, krb5-mini-1.19.2-150300.16.1
SUSE Linux Enterprise High Performance Computing LTSS 15 SP3 (src):
 krb5-1.19.2-150300.16.1
SUSE Linux Enterprise Server 15 SP3 LTSS 15-SP3 (src):
 krb5-1.19.2-150300.16.1
SUSE Linux Enterprise Server for SAP Applications 15 SP3 (src):
 krb5-1.19.2-150300.16.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 9 Maintenance Automation 2024-03-27 12:30:04 UTC

SUSE-SU-2024:1006-1: An update that solves two vulnerabilities can now be installed.

Category: security (important)
Bug References: 1220770, 1220771
CVE References: CVE-2024-26458, CVE-2024-26461
Maintenance Incident: [SUSE:Maintenance:33038](https://smelt.suse.de/incident/33038/)
Sources used:
SUSE Manager Proxy 4.3 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Manager Retail Branch Server 4.3 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Manager Server 4.3 (src):
 krb5-1.19.2-150400.3.9.1
openSUSE Leap 15.4 (src):
 krb5-1.19.2-150400.3.9.1, krb5-mini-1.19.2-150400.3.9.1
openSUSE Leap Micro 5.3 (src):
 krb5-1.19.2-150400.3.9.1
openSUSE Leap Micro 5.4 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Linux Enterprise Micro for Rancher 5.3 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Linux Enterprise Micro 5.3 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Linux Enterprise Micro for Rancher 5.4 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Linux Enterprise Micro 5.4 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Linux Enterprise Desktop 15 SP4 LTSS 15-SP4 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Linux Enterprise Server 15 SP4 LTSS 15-SP4 (src):
 krb5-1.19.2-150400.3.9.1
SUSE Linux Enterprise Server for SAP Applications 15 SP4 (src):
 krb5-1.19.2-150400.3.9.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 10 Davide Benini 2024-03-27 17:37:32 UTC

As indicated at https://bugzilla.suse.com/show_bug.cgi?id=1221579#c3, point 2, I think 11SP4 is affected, but I see in smash it's still under analysis.
Security team, could you confirm 11SP4 is affected?

Comment 12 Maintenance Automation 2024-04-08 12:30:37 UTC

SUSE-SU-2024:1148-1: An update that solves two vulnerabilities can now be installed.

Category: security (important)
Bug References: 1220770, 1220771
CVE References: CVE-2024-26458, CVE-2024-26461
Maintenance Incident: [SUSE:Maintenance:33148](https://smelt.suse.de/incident/33148/)
Sources used:
SUSE Linux Enterprise High Performance Computing 12 SP5 (src):
 krb5-1.16.3-46.6.1
SUSE Linux Enterprise Server 12 SP5 (src):
 krb5-1.16.3-46.6.1
SUSE Linux Enterprise Server for SAP Applications 12 SP5 (src):
 krb5-1.16.3-46.6.1
SUSE Linux Enterprise Software Development Kit 12 SP5 (src):
 krb5-1.16.3-46.6.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 21 OBSbugzilla Bot 2024-07-05 11:15:05 UTC

This is an autogenerated message for OBS integration:
This bug (1220770) was mentioned in
https://build.opensuse.org/request/show/1185764 Factory / krb5