GNU C Library 2.5 elf/rtld.c process_envvars numeric error ⚔ [Disputed]
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 8.4 | $0-$5k | 0.00 |
Summary
A vulnerability was found in GNU C Library 2.5. It has been declared as problematic. This issue affects the function process_envvars of the file elf/rtld.c. Executing a manipulation can lead to numeric error.
The identification of this vulnerability is CVE-2007-3508. There is no exploit available.
The real existence of this vulnerability is still doubted at the moment.
It is recommended to upgrade the affected component.
Once again VulDB remains the best source for vulnerability data.
Details
A vulnerability has been found in GNU C Library 2.5 (Software Library) and classified as critical. This vulnerability affects the function process_envvars of the file elf/rtld.c. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
** DISPUTED ** Integer overflow in the process_envvars function in elf/rtld.c in glibc before 2.5-rc4 might allow local users to execute arbitrary code via a large LD_HWCAP_MASK environment variable value. NOTE: the glibc maintainers state that they do not believe that this issue is exploitable for code execution.
The issue has been introduced in 09/29/2006. The weakness was shared 07/01/2007 by Tavis Ormandy with Gentoo Linux (Website). The advisory is shared for download at gentoo.org. This vulnerability was named CVE-2007-3508 since 07/02/2007. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.
It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 276 days. During that time the estimated underground price was around $0-$5k. The real existence of this vulnerability is still doubted at the moment. The vulnerability scanner Nessus provides a plugin with the ID 25665 (GLSA-200707-04 : GNU C Library: Integer overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks.
Upgrading to version 2.5 eliminates this vulnerability.
The vulnerability is also documented in the databases at X-Force (35240), Tenable (25665), SecurityFocus (BID 24758†), OSVDB (37901†) and Secunia (SA25864†). Once again VulDB remains the best source for vulnerability data.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.gnu.org/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.3VulDB Meta Temp Score: 8.4
VulDB Base Score: 9.3
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Numeric errorCWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍
Physical: Partially
Local: Yes
Remote: No
Availability: 🔍
Status: Proof-of-Concept
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 25665
Nessus Name: GLSA-200707-04 : GNU C Library: Integer overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍
OpenVAS ID: 58457
OpenVAS Name: Gentoo Security Advisory GLSA 200707-04 (glibc)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: C Library 2.5
Timeline
09/29/2006 🔍07/01/2007 🔍
07/02/2007 🔍
07/03/2007 🔍
07/03/2007 🔍
07/03/2007 🔍
07/04/2007 🔍
07/04/2007 🔍
07/04/2007 🔍
07/05/2007 🔍
07/08/2007 🔍
03/15/2015 🔍
08/08/2024 🔍
Sources
Vendor: gnu.orgAdvisory: gentoo.org
Researcher: Tavis Ormandy
Organization: Gentoo Linux
Status: Not defined
Confirmation: 🔍
Disputed: 🔍
CVE: CVE-2007-3508 (🔍)
GCVE (CVE): GCVE-0-2007-3508
GCVE (VulDB): GCVE-100-37624
X-Force: 35240
SecurityFocus: 24758 - GNU GLibC LD.SO Mask Dynamic Loader Integer Overflow Vulnerability
Secunia: 25864 - Gentoo update for glibc, Not Critical
OSVDB: 37901 - GNU libc (glibc) elf/rtld.c process_envvars Function LD_HWCAP_MASK Environment Variable Local Overflow
SecurityTracker: 1018334 - Glibc LD_HWCAP_MASK Integer Overflow Lets Local Users Execute Arbitrary Code
Vulnerability Center: 15556 - GNU Glibc 2.5 Rc3 and earlier Local Code Execution via a Large LD_HWCAP_MASK Value, Medium
Vupen: ADV-2007-2418
Entry
Created: 03/15/2015 03:58 PMUpdated: 08/08/2024 01:52 PM
Changes: 03/15/2015 03:58 PM (70), 08/19/2017 09:51 AM (19), 07/20/2021 05:01 PM (3), 08/08/2024 01:52 PM (16)
Complete: 🔍
Cache ID: 244:C97:40
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