klibc 1.5.20/1.5.21 DHCP Reply /tmp/net-$DEVICE.conf command injection
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.4 | $0-$5k | 0.00 |
A vulnerability was found in klibc 1.5.20/1.5.21. It has been classified as critical. This affects an unknown code block of the file /tmp/net-$DEVICE.conf of the component DHCP Reply Handler. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.
The bug was discovered 05/18/2011. The weakness was presented 11/14/2019 by Naximilian Attems. This vulnerability is uniquely identified as CVE-2011-1930 since 05/09/2011. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.
The vulnerability was handled as a non-public zero-day exploit for at least 862 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 70161 (GLSA-201309-21 : klibc: Command Injection), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.
Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (70161).
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 8.5VulDB Meta Temp Score: 8.4
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CVSSv2
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VulDB Base Score: 🔍
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Exploiting
Class: Command injectionCWE: CWE-77 / CWE-74 / CWE-707
ATT&CK: T1202
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
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: 70161
Nessus Name: GLSA-201309-21 : klibc: Command Injection
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 18627
OpenVAS Name: Gentoo Linux Local Check: https://security.gentoo.org/glsa/201309-21
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
05/09/2011 🔍05/18/2011 🔍
05/18/2011 🔍
09/26/2013 🔍
09/27/2013 🔍
11/14/2019 🔍
11/15/2019 🔍
02/14/2024 🔍
Sources
Advisory: security.gentoo.orgResearcher: Naximilian Attems
Status: Not defined
CVE: CVE-2011-1930 (🔍)
SecurityFocus: 47924 - klibc DHCP Options Processing Remote Shell Command Execution Vulnerability
OSVDB: 73394
Entry
Created: 11/15/2019 07:03Updated: 02/14/2024 09:08
Changes: 11/15/2019 07:03 (43), 11/15/2019 07:08 (31), 02/14/2024 09:08 (4)
Complete: 🔍
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