Bug 1223423 (CVE-2024-33599)

Summary:	VUL-0: CVE-2024-33599: glibc: stack-based buffer overflow in netgroup cache
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Andreas Schwab <schwab>
Status:	IN_PROGRESS ---	QA Contact:	Security Team bot <security-team>
Severity:	Major
Priority:	P3 - Medium	CC:	carlos.lopez, giuliano.belinassi, meissner
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/403187/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-33599:7.6:(AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Bug Depends on:
Bug Blocks:	1223530

Description SMASH SMASH 2024-04-26 11:23:57 UTC

A stack-based buffer overflow in nscd was reported and assigned CVE-2024-33599.

Reference: https://sourceware.org/bugzilla/show_bug.cgi?id=31677

---

nscd/netgroupcache.c (addinnetgrX):

497   struct indataset
498   {
499     struct datahead head;
500     innetgroup_response_header resp;
501   } *dataset
502       = (struct indataset *) mempool_alloc (db,
503                                             sizeof (*dataset) + req->key_len,
504                                             1);

mempool_alloc fails and returns NULL.


This is possible if posix_fallocate fails and the retry fails.

505   struct indataset dataset_mem;
506   bool cacheable = true;
507   if (__glibc_unlikely (dataset == NULL))
508     {
509       cacheable = false;
510       dataset = &dataset_mem;

This structure has no room for req->key_len material.

511     }
512 
513   datahead_init_pos (&dataset->head, sizeof (*dataset) + req->key_len,
514                      sizeof (innetgroup_response_header),
515                      he == NULL ? 0 : dh->nreloads + 1, result->head.ttl);
516   /* Set the notfound status and timeout based on the result from
517      getnetgrent.  */
518   dataset->head.notfound = result->head.notfound;
519   dataset->head.timeout = timeout;
520 
521   dataset->resp.version = NSCD_VERSION;
522   dataset->resp.found = result->resp.found;
523   /* Until we find a matching entry the result is 0.  */
524   dataset->resp.result = 0;
525 
526   char *key_copy = memcpy ((char *) (dataset + 1), group, req->key_len);

This copies up to req->key_len material to a structure that has no storage space for it.

This was detected by static code analysis.

It will only happen in the case the database runs out of memory/storage while expanding the netgroup cache.

The group entries overwrite other data on the stack after dataset_mem.

The workaround is not to cache the netgroup if this is impacting the use of the application.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-33599
https://bugzilla.redhat.com/show_bug.cgi?id=2277202

Comment 1 Giuliano Belinassi 2024-04-29 12:56:52 UTC

What is the SUSE CVE score for this?

Comment 2 Marcus Meissner 2024-04-29 13:00:05 UTC

(In reply to Giuliano Belinassi from comment #1)
> What is the SUSE CVE score for this?

CVSSv3.1:SUSE:CVE-2024-33599:7.6:(AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H)

Comment 7 Giuliano Belinassi 2024-05-02 21:49:55 UTC

Regarding userspace livepatching of this bug: see https://bugzilla.suse.com/show_bug.cgi?id=1223589

Comment 16 OBSbugzilla Bot 2024-05-14 10:25:02 UTC

This is an autogenerated message for OBS integration:
This bug (1223423) was mentioned in
https://build.opensuse.org/request/show/1173940 Factory / glibc

Comment 20 Maintenance Automation 2024-05-17 08:30:02 UTC

SUSE-SU-2024:1675-1: An update that solves five vulnerabilities can now be installed.

Category: security (important)
Bug References: 1222992, 1223423, 1223424, 1223425
CVE References: CVE-2024-2961, CVE-2024-33599, CVE-2024-33600, CVE-2024-33601, CVE-2024-33602
Maintenance Incident: [SUSE:Maintenance:33854](https://smelt.suse.de/incident/33854/)
Sources used:
SUSE Linux Enterprise Software Development Kit 12 SP5 (src):
 glibc-2.22-114.34.1
SUSE Linux Enterprise High Performance Computing 12 SP5 (src):
 glibc-2.22-114.34.1
SUSE Linux Enterprise Server 12 SP5 (src):
 glibc-2.22-114.34.1
SUSE Linux Enterprise Server for SAP Applications 12 SP5 (src):
 glibc-2.22-114.34.1

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 22 OBSbugzilla Bot 2024-05-21 08:15:03 UTC

This is an autogenerated message for OBS integration:
This bug (1223423) was mentioned in
https://build.opensuse.org/request/show/1175454 Factory / glibc

Comment 25 Maintenance Automation 2024-06-03 08:30:01 UTC

SUSE-SU-2024:1895-1: An update that solves four vulnerabilities can now be installed.

Category: security (important)
Bug References: 1221940, 1223423, 1223424, 1223425
CVE References: CVE-2024-33599, CVE-2024-33600, CVE-2024-33601, CVE-2024-33602
Maintenance Incident: [SUSE:Maintenance:33620](https://smelt.suse.de/incident/33620/)
Sources used:
openSUSE Leap 15.3 (src):
 glibc-testsuite-src-2.31-150300.83.1, glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
openSUSE Leap Micro 5.3 (src):
 glibc-2.31-150300.83.1
openSUSE Leap Micro 5.4 (src):
 glibc-2.31-150300.83.1
openSUSE Leap 15.5 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise Micro for Rancher 5.3 (src):
 glibc-2.31-150300.83.1
SUSE Linux Enterprise Micro 5.3 (src):
 glibc-2.31-150300.83.1
SUSE Linux Enterprise Micro for Rancher 5.4 (src):
 glibc-2.31-150300.83.1
SUSE Linux Enterprise Micro 5.4 (src):
 glibc-2.31-150300.83.1
SUSE Linux Enterprise Micro 5.5 (src):
 glibc-2.31-150300.83.1
Basesystem Module 15-SP5 (src):
 glibc-2.31-150300.83.1
Development Tools Module 15-SP5 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise High Performance Computing LTSS 15 SP3 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise Desktop 15 SP4 LTSS 15-SP4 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise Server 15 SP3 LTSS 15-SP3 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise Server 15 SP4 LTSS 15-SP4 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise Server for SAP Applications 15 SP3 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise Server for SAP Applications 15 SP4 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Manager Proxy 4.3 (src):
 glibc-2.31-150300.83.1
SUSE Manager Retail Branch Server 4.3 (src):
 glibc-2.31-150300.83.1
SUSE Manager Server 4.3 (src):
 glibc-2.31-150300.83.1
SUSE Enterprise Storage 7.1 (src):
 glibc-utils-src-2.31-150300.83.1, glibc-2.31-150300.83.1
SUSE Linux Enterprise Micro 5.1 (src):
 glibc-2.31-150300.83.1
SUSE Linux Enterprise Micro 5.2 (src):
 glibc-2.31-150300.83.1
SUSE Linux Enterprise Micro for Rancher 5.2 (src):
 glibc-2.31-150300.83.1

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 26 Maintenance Automation 2024-06-11 08:30:53 UTC

SUSE-SU-2024:1977-1: An update that solves five vulnerabilities can now be installed.

Category: security (important)
Bug References: 1222992, 1223423, 1223424, 1223425
CVE References: CVE-2024-2961, CVE-2024-33599, CVE-2024-33600, CVE-2024-33601, CVE-2024-33602
Maintenance Incident: [SUSE:Maintenance:33857](https://smelt.suse.de/incident/33857/)
Sources used:
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2 (src):
 glibc-2.26-150000.13.73.1
SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (src):
 glibc-2.26-150000.13.73.1
SUSE Linux Enterprise Server for SAP Applications 15 SP2 (src):
 glibc-2.26-150000.13.73.1

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.