Full Report
Erlang security advisory (AV26-750)
Analysis Summary
# Vulnerability: Critical Security Updates for Erlang/OTP
## CVE Details
*Note: While the specific CVE IDs were not listed in the provided summary text, relevant historical patches for these version ranges (11.x and 17.x) typically address certificate validation and memory safety issues. Please refer to the GitHub link for specific identifiers.*
- **CVE ID:** CVE-Pending (Refer to GitHub Advisory)
- **CVSS Score:** N/A (Severity categorized as Advisory)
- **CWE:** Commonly includes CWE-295 (Improper Certificate Validation) or CWE-119 (Memory Corruption) in these frameworks.
## Affected Systems
- **Products:** Erlang/OTP
- **Versions:**
- 10.2 prior to 11.7.4
- 6.0 prior to 17.0.4
- **Configurations:** Systems utilizing Erlang distribution or SSL/TLS capabilities within the affected version ranges.
## Vulnerability Description
Based on the advisory AV26-750, the vulnerabilities reside within the Open Telephony Platform (OTP) component of Erlang. These typically involve flaws in how Erlang handles secure communications or internal data processing, potentially allowing an attacker to bypass security controls or cause a denial of service within the Erlang runtime environment.
## Exploitation
- **Status:** Not explicitly reported as exploited in the wild (refer to vendor for latest updates).
- **Complexity:** Medium (Typically requires network access to the Erlang node).
- **Attack Vector:** Network
## Impact
- **Confidentiality:** Potential (depending on SSL/TLS flaws)
- **Integrity:** Potential
- **Availability:** Potential (Denial of Service risk)
## Remediation
### Patches
Users are advised to upgrade to the following versions or higher:
- **Erlang/OTP 11.7.4**
- **Erlang/OTP 17.0.4**
### Workarounds
- Ensure Erlang distribution ports (default 4369 and dynamic ranges) are firewalled and accessible only to trusted nodes.
- Implement strictly validated TLS certificates for all inter-node communication.
## Detection
- **Indicators of Compromise:** Unusual crashes in the Erlang VM (BEAM), unexpected peer connections, or failed handshake logs in the SSL application.
- **Detection methods and tools:**
- Audit installed Erlang versions using `erl -eval 'erlang:display(erlang:system_info(otp_release)), halt().'`
- Use Vulnerability Scanners compatible with Erlang/OTP versioning.
## References
- **Vendor advisory:** hxxps[://]github[.]com/erlang/otp/security/advisories/
- **Canadian Centre for Cyber Security:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/erlang-security-advisory-av26-750