CVE-2009-0127
M2Crypto SSL/TLS Signature Validation Bypass (Certificate Chain Injection)
Description
M2Crypto does not properly check the return value from the OpenSSL EVP_VerifyFinal, DSA_verify, ECDSA_verify, DSA_do_verify, and ECDSA_do_verify functions, which might allow remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. NOTE: a Linux vendor disputes the relevance of this report to the M2Crypto product because "these functions are not used anywhere in m2crypto.
INFO
Published Date :
Jan. 15, 2009, 5:30 p.m.
Last Modified :
April 9, 2025, 12:30 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] |
Solution
- Update the affected packages.
- Apply the missing patches.
Public PoC/Exploit Available at Github
CVE-2009-0127 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2009-0127.
| URL | Resource |
|---|---|
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511515 | Third Party Advisory |
| http://openwall.com/lists/oss-security/2009/01/12/4 | Mailing List |
| https://bugzilla.redhat.com/show_bug.cgi?id=479676 | Exploit Issue Tracking |
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511515 | Third Party Advisory |
| http://openwall.com/lists/oss-security/2009/01/12/4 | Mailing List |
| https://bugzilla.redhat.com/show_bug.cgi?id=479676 | Exploit Issue Tracking |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2009-0127 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2009-0127
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2009-0127 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2009-0127 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511515 Added Reference http://openwall.com/lists/oss-security/2009/01/12/4 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=479676 -
CVE Modified by [email protected]
Aug. 07, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 17, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 11, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Mar. 21, 2024
Action Type Old Value New Value Added Tag MITRE disputed -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed Description ** DISPUTED ** M2Crypto does not properly check the return value from the OpenSSL EVP_VerifyFinal, DSA_verify, ECDSA_verify, DSA_do_verify, and ECDSA_do_verify functions, which might allow remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. NOTE: a Linux vendor disputes the relevance of this report to the M2Crypto product because "these functions are not used anywhere in m2crypto." M2Crypto does not properly check the return value from the OpenSSL EVP_VerifyFinal, DSA_verify, ECDSA_verify, DSA_do_verify, and ECDSA_do_verify functions, which might allow remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. NOTE: a Linux vendor disputes the relevance of this report to the M2Crypto product because "these functions are not used anywhere in m2crypto. -
Reanalysis by [email protected]
Jun. 07, 2021
Action Type Old Value New Value Changed Reference Type http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511515 No Types Assigned http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511515 Third Party Advisory Changed Reference Type http://openwall.com/lists/oss-security/2009/01/12/4 No Types Assigned http://openwall.com/lists/oss-security/2009/01/12/4 Mailing List Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=479676 Exploit https://bugzilla.redhat.com/show_bug.cgi?id=479676 Exploit, Issue Tracking Changed CPE Configuration OR *cpe:2.3:a:heikki_toivonen:m2crypto:-:*:*:*:*:*:*:* OR *cpe:2.3:a:heikkitoivonen:m2crypto:-:*:*:*:*:*:*:* -
Modified Analysis by [email protected]
May. 13, 2016
Action Type Old Value New Value Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:heikki_toivonen:m2crypto:_nil_:*:*:*:*:*:*:* Configuration 1 OR *cpe:2.3:a:heikki_toivonen:m2crypto:-:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Jan. 16, 2009
Action Type Old Value New Value
Vulnerability Scoring Details
Base CVSS Score: 5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.01%
score
0.27323
percentile