The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 28
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* | up to 2.17 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.0.1:*:*:*:*:*:*:* | 2.0.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.0.2:*:*:*:*:*:*:* | 2.0.2 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.0.3:*:*:*:*:*:*:* | 2.0.3 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.0.4:*:*:*:*:*:*:* | 2.0.4 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.0.5:*:*:*:*:*:*:* | 2.0.5 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.0.6:*:*:*:*:*:*:* | 2.0.6 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.1:*:*:*:*:*:*:* | 2.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.1.1:*:*:*:*:*:*:* | 2.1.1 | Vulnerable | GNU |
- cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* Versions up to 2.17 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.0.1:*:*:*:*:*:*:* Versions 2.0.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.0.2:*:*:*:*:*:*:* Versions 2.0.2 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.0.3:*:*:*:*:*:*:* Versions 2.0.3 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.0.4:*:*:*:*:*:*:* Versions 2.0.4 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.0.5:*:*:*:*:*:*:* Versions 2.0.5 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.0.6:*:*:*:*:*:*:* Versions 2.0.6 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.1.1:*:*:*:*:*:*:* Versions 2.1.1 Vulnerable ·GNU
Show 18 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:glibc:2.1.1.6:*:*:*:*:*:*:* | 2.1.1.6 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.1.2:*:*:*:*:*:*:* | 2.1.2 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.1.3:*:*:*:*:*:*:* | 2.1.3 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.1.9:*:*:*:*:*:*:* | 2.1.9 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.4:*:*:*:*:*:*:* | 2.4 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.10.1:*:*:*:*:*:*:* | 2.10.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.11:*:*:*:*:*:*:* | 2.11 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.11.1:*:*:*:*:*:*:* | 2.11.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.11.2:*:*:*:*:*:*:* | 2.11.2 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.11.3:*:*:*:*:*:*:* | 2.11.3 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.12.1:*:*:*:*:*:*:* | 2.12.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.12.2:*:*:*:*:*:*:* | 2.12.2 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.13:*:*:*:*:*:*:* | 2.13 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.14:*:*:*:*:*:*:* | 2.14 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.14.1:*:*:*:*:*:*:* | 2.14.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.15:*:*:*:*:*:*:* | 2.15 | Vulnerable | GNU |
| cpe:2.3:a:gnu:glibc:2.16:*:*:*:*:*:*:* | 2.16 | Vulnerable | GNU |
| cpe:2.3:a:gnu:eglibc:*:*:*:*:*:*:*:* | all versions | Vulnerable | GNU |
- cpe:2.3:a:gnu:glibc:2.1.1.6:*:*:*:*:*:*:* Versions 2.1.1.6 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.1.2:*:*:*:*:*:*:* Versions 2.1.2 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.1.3:*:*:*:*:*:*:* Versions 2.1.3 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.1.9:*:*:*:*:*:*:* Versions 2.1.9 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.4:*:*:*:*:*:*:* Versions 2.4 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.10.1:*:*:*:*:*:*:* Versions 2.10.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.11:*:*:*:*:*:*:* Versions 2.11 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.11.1:*:*:*:*:*:*:* Versions 2.11.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.11.2:*:*:*:*:*:*:* Versions 2.11.2 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.11.3:*:*:*:*:*:*:* Versions 2.11.3 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.12.1:*:*:*:*:*:*:* Versions 2.12.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.12.2:*:*:*:*:*:*:* Versions 2.12.2 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.13:*:*:*:*:*:*:* Versions 2.13 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.14:*:*:*:*:*:*:* Versions 2.14 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.14.1:*:*:*:*:*:*:* Versions 2.14.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.15:*:*:*:*:*:*:* Versions 2.15 Vulnerable ·GNU
- cpe:2.3:a:gnu:glibc:2.16:*:*:*:*:*:*:* Versions 2.16 Vulnerable ·GNU
- cpe:2.3:a:gnu:eglibc:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·GNU
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2013-4788
- 2026-10-03 Alias added: GHSA-xh2f-h76w-4qqc
References
More GNU Eglibc vulnerabilities
- TI-2011-02363 Integer signedness error in Glibc before 2.13 and eglibc before 2.13, when using… CVSS 2.0MEDIUM 6.8
- TI-2011-00924 The GNU C Library (aka glibc or libc6) before 2.12.2 and Embedded GLIBC (EGLIBC) allow… CVSS 2.0MEDIUM 5.1
Sources
- CVE-2013-4788 · CVE Program
- CVE-2013-4788 · NVD
- FIRST EPSS
- GHSA-xh2f-h76w-4qqc · GitHub Advisory Database · CC BY 4.0
- CVE-2013-4788 · Red Hat security data · CC BY 4.0
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