Improper input validation in GNU Eglibc
CVE-2013-4788
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.1 (Medium). Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.114 (95.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.114 · newest: 0.114 · change: 0.000
Affected products
- GNU Eglibc
- GNU Glibc — versions 2.0, 2.0.1, 2.0.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- seclists.org/fulldisclosure/2015/Sep/23 (mailing-list)
- www.mandriva.com/security/advisories (vendor-advisory)
- www.openwall.com/lists/oss-security/2013/07/15/9 (mailing-list, Exploit, Patch)
- www.securityfocus.com/bid/61183 (vdb-entry)
- security.gentoo.org/glsa/201503-04 (vendor-advisory)
- www.mandriva.com/security/advisories (vendor-advisory)
- hmarco.org/bugs/CVE-2013-4788.html (Exploit, Patch)
Frequently asked questions
- What is CVE-2013-4788?
- CVE-2013-4788 is a vulnerability in GNU Eglibc, classified under Improper Input Validation. Published 2013-10-04.
- Is CVE-2013-4788 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.