CVE-2018-5184

Using remote content in encrypted messages can lead to the disclosure of plaintext. This vulnerability affects Thunderbird ESR < 52.8 and Thunderbird < 52.8.

Updated thunderbird packages fix security vulnerabilities:

Mozilla: Memory safety bugs fixed in Firefox 60 and Firefox ESR 52.8 (CVE-2018-5150).

Mozilla: Use-after-free with SVG animations and clip paths (CVE-2018-5154).

Mozilla: Use-after-free with SVG animations and text paths (CVE-2018-5155).

Mozilla: Integer overflow and out-of-bounds write in Skia (CVE-2018-5159).

Mozilla: Hang via malformed headers (CVE-2018-5161).

Mozilla: Encrypted mail leaks plaintext through src attribute (CVE-2018-5162).

Mozilla: Lightweight themes can be installed without user interaction (CVE-2018-5168).

Mozilla: Filename spoofing for external attachments (CVE-2018-5170).

Mozilla: Buffer overflow during UTF-8 to Unicode string conversion through legacy extension (CVE-2018-5178).

Mozilla: Backport critical security fixes in Skia (CVE-2018-5183).

Mozilla: Full plaintext recovery in S/MIME via chosen-ciphertext attack (CVE-2018-5184).

Mozilla: Leaking plaintext through HTML forms (CVE-2018-5185).

These are all security issues fixed in the MozillaThunderbird-91.1.1-1.1 package on the GA media of openSUSE Tumbleweed.

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 via application crash, install lightweight themes without user interaction, or execute arbitrary code. (CVE-2018-5150, CVE-2018-5154, CVE-2018-5155, CVE-2018-5159, CVE-2018-5168, CVE-2018-5178)

An issue was discovered when processing message headers 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 via application hang. (CVE-2018-5161)

It was discovered encrypted messages could leak plaintext via the src attribute of remote images or links. An attacker could potentially exploit this to obtain sensitive information. (CVE-2018-5162)

It was discovered that the filename of an attachment could be spoofed. An attacker could potentially exploit this by tricking the user in to opening an attachment of a different type to the one expected. (CVE-2018-5170)

Multiple security issues were discovered in Skia. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code. (CVE-2018-5183)

It was discovered that S/MIME encrypted messages with remote content could leak plaintext via a chosen-ciphertext attack. An attacker could potentially exploit this to obtain sensitive information. (CVE-2018-5184)

It was discovered that plaintext of decrypted emails could leak by submitting an embedded form. An attacker could potentially exploit this to obtain sensitive information. (CVE-2018-5185)