CVE-2013-4788: Input Validation
First published: Fri Oct 04 2013(Updated: )
The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU C Library | <=2.17 | |
| GNU C Library | =2.0 | |
| GNU C Library | =2.0.1 | |
| GNU C Library | =2.0.2 | |
| GNU C Library | =2.0.3 | |
| GNU C Library | =2.0.4 | |
| GNU C Library | =2.0.5 | |
| GNU C Library | =2.0.6 | |
| GNU C Library | =2.1 | |
| GNU C Library | =2.1.1 | |
| GNU C Library | =2.1.1.6 | |
| GNU C Library | =2.1.2 | |
| GNU C Library | =2.1.3 | |
| GNU C Library | =2.1.9 | |
| GNU C Library | =2.4 | |
| GNU C Library | =2.10.1 | |
| GNU C Library | =2.11 | |
| GNU C Library | =2.11.1 | |
| GNU C Library | =2.11.2 | |
| GNU C Library | =2.11.3 | |
| GNU C Library | =2.12.1 | |
| GNU C Library | =2.12.2 | |
| GNU C Library | =2.13 | |
| GNU C Library | =2.14 | |
| GNU C Library | =2.14.1 | |
| GNU C Library | =2.15 | |
| GNU C Library | =2.16 | |
| GNU EGLIBC |
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Reference Links
- http://hmarco.org/bugs/CVE-2013-4788.html
- http://seclists.org/fulldisclosure/2015/Sep/23
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:283
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:284
- http://www.openwall.com/lists/oss-security/2013/07/15/9
- http://www.securityfocus.com/bid/61183
- https://security.gentoo.org/glsa/201503-04
Frequently Asked Questions
What is the severity of CVE-2013-4788?
CVE-2013-4788 has been rated as a medium severity vulnerability due to the potential for context-dependent attackers to control execution flow.
How do I fix CVE-2013-4788?
To fix CVE-2013-4788, you should upgrade your GNU C Library to version 2.18 or later.
What versions of glibc are affected by CVE-2013-4788?
CVE-2013-4788 affects glibc versions 2.4, 2.17, and earlier, as well as various versions of EGLIBC.
What does CVE-2013-4788 exploit?
CVE-2013-4788 exploits an uninitialized random value for the pointer guard, which can lead to buffer overflow vulnerabilities.
Can CVE-2013-4788 be exploited remotely?
CVE-2013-4788 is context-dependent and may require local access to exploit, but it can lead to significant risks if successfully leveraged.
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- vendor/gnu
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- version/gnu c library/2.17
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- version/gnu c library/2.0.1
- version/gnu c library/2.0.2
- version/gnu c library/2.0.3
- version/gnu c library/2.0.4
- version/gnu c library/2.0.5
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- version/gnu c library/2.1
- version/gnu c library/2.1.1
- version/gnu c library/2.1.1.6
- version/gnu c library/2.1.2
- version/gnu c library/2.1.3
- version/gnu c library/2.1.9
- version/gnu c library/2.4
- version/gnu c library/2.10.1
- version/gnu c library/2.11
- version/gnu c library/2.11.1
- version/gnu c library/2.11.2
- version/gnu c library/2.11.3
- version/gnu c library/2.12.1
- version/gnu c library/2.12.2
- version/gnu c library/2.13
- version/gnu c library/2.14
- version/gnu c library/2.14.1
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- version/gnu c library/2.16
- canonical/gnu eglibc