CVE-2013-1431 in Telepathy Gabble
Summary
by MITRE
The Wocky module in Telepathy Gabble before 0.16.6 and 0.17.x before 0.17.4, when connecting to a "legacy Jabber server," does not properly enforce the WockyConnector:tls-required flag, which allows remote attackers to bypass TLS verification and perform a man-in-the-middle attacks.
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Analysis
by VulDB Data Team • 12/27/2024
The vulnerability described in CVE-2013-1431 represents a critical security flaw in the Telepathy Gabble library's Wocky module that affected versions prior to 0.16.6 and 0.17.4. This issue specifically targets the handling of TLS security parameters during connection establishment with legacy Jabber servers, creating a significant attack surface that could be exploited by malicious actors. The flaw resides in the improper enforcement of the WockyConnector:tls-required flag, which serves as a crucial security mechanism for ensuring encrypted communication channels between client and server components.
The technical implementation of this vulnerability stems from a failure in the Wocky module's connection handling logic where the tls-required flag is not properly validated or enforced. This flag is designed to mandate TLS encryption for all communications, but the vulnerability allows attackers to bypass this requirement even when the flag is explicitly set to enforce TLS. The flaw essentially creates a scenario where the client may establish connections without proper encryption, making it susceptible to interception and manipulation of sensitive communication data. This behavior directly violates the fundamental security principle of enforcing mandatory encryption protocols for sensitive data transmission.
The operational impact of this vulnerability extends beyond simple connection establishment issues, as it enables sophisticated man-in-the-middle attack scenarios that can compromise the integrity and confidentiality of all communications passing through the affected Telepathy Gabble implementation. Attackers can exploit this weakness to intercept, modify, or redirect communication traffic between clients and legacy Jabber servers, potentially gaining access to sensitive user credentials, private messages, and other confidential information. The vulnerability affects not only individual user communications but also potentially impacts enterprise communication systems that rely on these libraries for instant messaging and presence services.
Organizations and developers utilizing Telepathy Gabble libraries in environments with legacy Jabber server connections face significant security risks when operating vulnerable versions. The attack vector requires minimal privileges and can be executed remotely, making it particularly dangerous in networked environments where communication security is paramount. This vulnerability aligns with CWE-310, which addresses cryptographic weaknesses, and specifically relates to improper enforcement of security parameters within network communication protocols. The flaw also maps to ATT&CK technique T1041, which covers data compression and transmission, as the vulnerability enables unauthorized interception of transmitted data.
Mitigation strategies for this vulnerability require immediate patching of affected Telepathy Gabble installations to versions 0.16.6 or 0.17.4 and later, which properly enforce the WockyConnector:tls-required flag. Additionally, system administrators should implement comprehensive monitoring of communication protocols and enforce mandatory TLS requirements across all network connections. Security teams should conduct thorough audits of all Telepathy Gabble implementations and ensure that proper TLS certificate validation is enforced at all connection points. The vulnerability highlights the importance of maintaining up-to-date security libraries and implementing robust security configuration management practices to prevent similar issues in the future.