Apple Mac OS X up to 13.1.0 Stack Guard stack_chk_guard memory corruption ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Apple Mac OS X up to 13.1.0 and classified as problematic. This vulnerability affects the function stack_chk_guard of the component Stack Guard. The manipulation leads to memory corruption. Moreover, an exploit is present. The presence of this vulnerability remains uncertain at this time.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 13.1.0 (Operating System). It has been rated as problematic. This issue affects the function stack_chk_guard of the component Stack Guard. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 05/15/2014 by rai the cat as Mac OS X stack_chk_guard not always safe from overwrite as not defined mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The vendor was not involved in the public release. The mailinglist post contains:

All credit due to the anon pastebin poster.
It's not clear if this vulnerability really exists. But it appears that the researcher mentioned is not a real person but a cat. The exploitation is known to be difficult. Attacking locally is a requirement. A simple authentication is necessary for exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed by rai the cat in ANSI C and been published immediately after the advisory. The exploit is available at maker.fea.st. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The real existence of this vulnerability is still doubted at the moment. The code used by the exploit is:

#include <stdio.h>

extern long __stack_chk_guard[8];

int main(int argc, char **argv, char **envp, char **apple)
{
  int i;
  for (i=0; apple[i]; i++) {
    printf("string(%u): %s\n", i, apple[i]);
  }

  printf("\n\n__stack_chk_guard: %016lx\n", *(long *)__stack_chk_guard);
}

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

thinkst.com is providing further details. Be aware that VulDB is the high quality source for vulnerability data.

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CPE 2.3info

CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: rai the cat
Programming Language: 🔍
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

05/15/2014 🔍
05/15/2014 +0 days 🔍
05/18/2014 +3 days 🔍
04/04/2019 +1782 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: Mac OS X stack_chk_guard not always safe from overwrite
Researcher: rai the cat
Status: Not defined
Disputed: 🔍

GCVE (VulDB): GCVE-100-13247
scip Labs: https://www.scip.ch/en/?labs.20150108
Misc.: 🔍

Entryinfo

Created: 05/18/2014 10:56
Updated: 04/04/2019 14:33
Changes: 05/18/2014 10:56 (54), 04/04/2019 14:33 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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