CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.4 | $5k-$25k | 0.00 |
A vulnerability classified as critical was found in OpenSSH 4.3/4.8 (Connectivity Software). Affected by this vulnerability is some unknown processing of the component Configuration File. The manipulation with an unknown input leads to a config vulnerability. The CWE definition for the vulnerability is CWE-16. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
A certain Red Hat modification to the ChrootDirectory feature in OpenSSH 4.8, as used in sshd in OpenSSH 4.3 in Red Hat Enterprise Linux (RHEL) 5.4 and Fedora 11, allows local users to gain privileges via hard links to setuid programs that use configuration files within the chroot directory, related to requirements for directory ownership.
The weakness was shared 09/30/2009 by Tomas Hoger (Website). The advisory is shared at rhn.redhat.com. This vulnerability is known as CVE-2009-2904. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/23/2021). MITRE ATT&CK project uses the attack technique T1592.004 for this issue.
The vulnerability scanner Nessus provides a plugin with the ID 17706 (Red Hat Enterprise Linux OpenSSH ChrootDirectory Local Privilege Escalation), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc.. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116971 (VMware ESX Service Console and vMA Third Party Updates (VMSA-2010-0004)).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at Tenable (17706). The entries 47137, 50482, 50420 and 50279 are related to this item.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.4VulDB Meta Temp Score: 8.4
VulDB Base Score: 8.4
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: ConfigCWE: CWE-16
ATT&CK: T1592.004
Local: Yes
Remote: No
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: 17706
Nessus Name: Red Hat Enterprise Linux OpenSSH ChrootDirectory Local Privilege Escalation
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
OpenVAS ID: 880746
OpenVAS Name: CentOS Update for openssh CESA-2009:1470 centos5 i386
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
08/20/2009 🔍09/30/2009 🔍
09/30/2009 🔍
09/30/2009 🔍
10/01/2009 🔍
10/01/2009 🔍
10/03/2009 🔍
11/18/2011 🔍
03/18/2015 🔍
08/23/2021 🔍
Sources
Advisory: rhn.redhat.comResearcher: Tomas Hoger
Status: Not defined
Confirmation: 🔍
CVE: CVE-2009-2904 (🔍)
OVAL: 🔍
Vulnerability Center: 23605 - Red Hat Enterprise Linux 5.4 OpenSSH \x27ChrootDirectory\x27 Local Privilege Escalation Vulnerability, High
SecurityFocus: 36552 - Red Hat Enterprise Linux OpenSSH 'ChrootDirectory' Option Local Privilege Escalation Vulnerability
OSVDB: 58495 - OpenSSH sshd ChrootDirectory Feature SetUID Hard Link Local Privilege Escalation
See also: 🔍
Entry
Created: 03/18/2015 15:15Updated: 08/23/2021 12:11
Changes: 03/18/2015 15:15 (63), 02/15/2017 09:23 (9), 08/23/2021 12:03 (4), 08/23/2021 12:11 (1)
Complete: 🔍
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