-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 National Cyber Alert System Technical Cyber Security Alert TA06-153A Mozilla Products Contain Multiple Vulnerabilities Original release date: June 2, 2006 Last revised: -- Source: US-CERT Systems Affected * Mozilla SeaMonkey * Firefox web browser * Thunderbird email client Any products based on Mozilla components, particularly Gecko, may also be affected. Overview The Mozilla web browser and derived products contain several vulnerabilities, the most serious of which could allow a remote attacker to execute arbitrary code on an affected system. I. Description Several vulnerabilities have been reported in the Mozilla web browser and derived products. More detailed information is available in the individual vulnerability notes, including: VU#237257 - Mozilla privilege escalation using addSelectionListener A privilege escalation vulnerability exists in the Mozilla addSelectionListener method. This may allow a remote attacker to execute arbitrary code. VU#421529 - Mozilla contains a buffer overflow vulnerability in crypto.signText() Mozilla products contain a buffer overflow in the crypto.signText() method. This may allow a remote attacker to execute arbitrary code. VU#575969 - Mozilla may process content-defined setters on object prototypes with elevated privileges Mozilla allows content-defined setters on object prototypes to execute with elevated privileges. This may allow a remote attacker to execute arbitrary code. VU#243153 - Mozilla may associate persisted XUL attributes with an incorrect URL Mozilla can allow persisted XUL attributes to associate with the wrong URL. This may allow a remote attacker to execute arbitrary code. VU#466673 - Mozilla contains multiple memory corruption vulnerabilities Mozilla contains several memory corruption vulnerabilities. This may allow a remote attacker to execute arbitrary code. II. Impact The most severe impact of these vulnerabilities could allow a remote attacker to execute arbitrary code with the privileges of the user running the affected application. Other effects include a denial of service or local information disclosure. III. Solution Upgrade Upgrade to Mozilla Firefox 1.5.0.4, Mozilla Thunderbird 1.5.0.4, or SeaMonkey 1.0.2. Disable JavaScript These vulnerabilities can be mitigated by disabling JavaScript. Appendix A. References * US-CERT Vulnerability Note VU#237257 - * US-CERT Vulnerability Note VU#421529 - * US-CERT Vulnerability Note VU#575969 - * US-CERT Vulnerability Note VU#243153 - * US-CERT Vulnerability Note VU#466673 - * Mozilla Foundation Security Advisories - * US-CERT Vulnerability Notes Related to June Mozilla Security Advisories - * Mozilla Foundation Security Advisories - * Firefox - Rediscover the Web - * Thunderbird - Reclaim your inbox - * The SeaMonkey Project - * Securing Your Web Browser - ____________________________________________________________________ The most recent version of this document can be found at: ____________________________________________________________________ Feedback can be directed to US-CERT Technical Staff. Please send email to with "TA06-153A Feedback VU#237257" in the subject. ____________________________________________________________________ For instructions on subscribing to or unsubscribing from this mailing list, visit . ____________________________________________________________________ Produced 2006 by US-CERT, a government organization. Terms of use: ____________________________________________________________________ Revision History Jun 2, 2006: Initial release -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iQEVAwUBRICC5H0pj593lg50AQKT/Af+IMgN13YNpubQiBvQsAQkXHTbjQnWuM7q XyvsEZHT/DAEUVr9kR1wx5IlS+lwELN9jq2QwfFJz7E+1psUJd5o9wLD/KUTlrUk baclGN/pEIR8jp1zyCVCCTbCeFig9RNA7vaGYzdbNjhXWhJANagK0bIK3Y9xS2ug B2i33KtkApsZ4Jn9/hXrtqkUhgf1FaBIWlq9By2gsVraAdRYiObtR3YfDDwX0d/H 8PHNxtdg+bOJEaYoQxYzxWDdx06wr7ZVzvGhkacWIyOmC35x/9mTmFOeZrH9ecjq 3fDxx3gUXSKIn4yToKnfxqCD8nA6vi9b22LW+CIKuSPosbloWaw9ew== =nbAW -----END PGP SIGNATURE-----