USN-4202-1

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USN-4202-1

Summary: thunderbird vulnerabilities

Details: It was discovered that a specially crafted S/MIME message with an inner encryption layer could be displayed as having a valid signature in some circumstances, even if the signer had no access to the encrypted message. An attacker could potentially exploit this to spoof the message author. (CVE-2019-11755) Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, bypass security restrictions, bypass same-origin restrictions, conduct cross-site scripting (XSS) attacks, or execute arbitrary code. (CVE-2019-11757, CVE-2019-11758, CVE-2019-11759, CVE-2019-11760, CVE-2019-11761, CVE-2019-11762, CVE-2019-11763, CVE-2019-11764) A heap overflow was discovered in the expat library in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. (CVE-2019-15903)

References: https://ubuntu.com/security/notices/USN-4202-1, https://ubuntu.com/security/CVE-2019-11755, https://ubuntu.com/security/CVE-2019-11757, https://ubuntu.com/security/CVE-2019-11758, https://ubuntu.com/security/CVE-2019-11759, https://ubuntu.com/security/CVE-2019-11760, https://ubuntu.com/security/CVE-2019-11761, https://ubuntu.com/security/CVE-2019-11762, https://ubuntu.com/security/CVE-2019-11763, https://ubuntu.com/security/CVE-2019-11764, https://ubuntu.com/security/CVE-2019-15903