ConfigServer Configserver Security Firewall up to 5.20 Admin Server CFS.c memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.1 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, was found in ConfigServer Configserver Security Firewall up to 5.20 (Firewall Software). Affected is an unknown functionality of the file CFS.c of the component Admin Server. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:
Stack-based buffer overflow in CFS.c in ConfigServer Security & Firewall (CSF) before 5.43, when running on a DirectAdmin server, allows local users to cause a denial of service (crash) via a long string in an admin.list file.
The weakness was shared 12/29/2011 (Website). The advisory is shared for download at exploit-db.com. This vulnerability is traded as CVE-2011-5033 since 12/29/2011. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.
A public exploit has been developed by FoX HaCkEr and been published before and not just after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 20 days. During that time the estimated underground price was around $0-$5k.
Upgrading to version 5.21 eliminates this vulnerability.
The vulnerability is also documented in the databases at X-Force (71758) and Exploit-DB (18225).
Product
Type
Vendor
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.9VulDB Meta Temp Score: 5.1
VulDB Base Score: 5.9
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
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VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: FoX HaCkEr
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Configserver Security Firewall 5.21
Timeline
12/09/2011 🔍12/09/2011 🔍
12/09/2011 🔍
12/29/2011 🔍
12/29/2011 🔍
12/29/2011 🔍
03/23/2015 🔍
01/26/2018 🔍
Sources
Advisory: exploit-db.comStatus: Not defined
Confirmation: 🔍
CVE: CVE-2011-5033 (🔍)
X-Force: 71758 - ConfigServer Firewall da_csf.cgi buffer overflow
SecurityFocus: 51005 - ConfigServer Firewall Buffer Overflow Vulnerability
OSVDB: 78088
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 03/23/2015 16:50Updated: 01/26/2018 08:19
Changes: 03/23/2015 16:50 (56), 01/26/2018 08:19 (11)
Complete: 🔍
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