CVE-2018-12374

Plaintext of decrypted emails can leak through by user submitting an embedded form by pressing enter key within a text input field. This vulnerability affects Thunderbird < 52.9.

The updated packages fix several bugs and some security issues:

Buffer overflow using computed size of canvas element. (CVE-2018-12359)

Use-after-free when using focus(). (CVE-2018-12360)

S/MIME and PGP decryption oracles can be built with HTML emails. (CVE-2018-12372)

S/MIME plaintext can be leaked through HTML reply/forward. (CVE-2018-12373)

Integer overflow in SSSE3 scaler. (CVE-2018-12362)

Use-after-free when appending DOM nodes. (CVE-2018-12363)

CSRF attacks through 307 redirects and NPAPI plugins. (CVE-2018-12364)

Compromised IPC child process can list local filenames. (CVE-2018-12365)

Invalid data handling during QCMS transformations. (CVE-2018-12366)

Using form to exfiltrate encrypted mail part by pressing enter in form field. (CVE-2018-12374)

Memory safety bugs fixed in Firefox 60, Firefox ESR 60.1, Firefox ESR 52.9, and Thunderbird 52.9. (CVE-2018-5188)

The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and does not correctly keep track of the status of multiple signatures, which allows remote attackers to spoof arbitrary email signatures via public keys containing crafted primary user ids. (CVE-2018-12019)

mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and verification actions, which allows remote attackers to spoof the output that GnuPG sends on file descriptor 2 to other programs that use the "--status-fd 2" option. For example, the OpenPGP data might represent an original filename that contains line feed characters in conjunction with GOODSIG or VALIDSIG status codes. (CVE-2018-12020)

The updated packages fix several bugs and some security issues:

Buffer overflow using computed size of canvas element. (CVE-2018-12359)

Use-after-free when using focus(). (CVE-2018-12360)

S/MIME and PGP decryption oracles can be built with HTML emails. (CVE-2018-12372)

S/MIME plaintext can be leaked through HTML reply/forward. (CVE-2018-12373)

Integer overflow in SSSE3 scaler. (CVE-2018-12362)

Use-after-free when appending DOM nodes. (CVE-2018-12363)

CSRF attacks through 307 redirects and NPAPI plugins. (CVE-2018-12364)

Compromised IPC child process can list local filenames. (CVE-2018-12365)

Invalid data handling during QCMS transformations. (CVE-2018-12366)

Using form to exfiltrate encrypted mail part by pressing enter in form field. (CVE-2018-12374)

Memory safety bugs fixed in Firefox 60, Firefox ESR 60.1, Firefox ESR 52.9, and Thunderbird 52.9. (CVE-2018-5188)

The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and does not correctly keep track of the status of multiple signatures, which allows remote attackers to spoof arbitrary email signatures via public keys containing crafted primary user ids. (CVE-2018-12019)

mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and verification actions, which allows remote attackers to spoof the output that GnuPG sends on file descriptor 2 to other programs that use the "--status-fd 2" option. For example, the OpenPGP data might represent an original filename that contains line feed characters in conjunction with GOODSIG or VALIDSIG status codes. (CVE-2018-12020)

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

This update for Mozilla Thunderbird to version 52.9.1 fixes multiple issues.

Security issues fixed, inherited from the Mozilla common code base (MFSA 2018-16, bsc#1098998):

• CVE-2018-12359: Buffer overflow using computed size of canvas element
• CVE-2018-12360: Use-after-free when using focus()
• CVE-2018-12362: Integer overflow in SSSE3 scaler
• CVE-2018-12363: Use-after-free when appending DOM nodes
• CVE-2018-12364: CSRF attacks through 307 redirects and NPAPI plugins
• CVE-2018-12365: Compromised IPC child process can list local filenames
• CVE-2018-12366: Invalid data handling during QCMS transformations
• CVE-2018-5188: Memory safety bugs fixed in Thunderbird 52.9.0

Security issues fixed that affect e-mail privacy and integrity (including EFAIL):

• CVE-2018-12372: S/MIME and PGP decryption oracles can be built with HTML emails (bsc#1100082)
• CVE-2018-12373: S/MIME plaintext can be leaked through HTML reply/forward (bsc#1100079)
• CVE-2018-12374: Using form to exfiltrate encrypted mail part by pressing enter in form field (bsc#1100081)

The following options are available for added security in certain scenarios:

• Option for not decrypting subordinate message parts that otherwise might reveal decryted content to the attacker. Preference mailnews.p7m_subparts_external needs to be set to true for added security.

The following upstream changes are included:

• Thunderbird will now prompt to compact IMAP folders even if the account is online
• Fix various problems when forwarding messages inline when using 'simple' HTML view
• Deleting or detaching attachments corrupted messages under certain circumstances (bsc#1100780)

The following tracked packaging changes are included:

• correct requires and provides handling (boo#1076907)
• reduce memory footprint with %ix86 at linking time via additional compiler flags (boo#1091376)
• Build from upstream source archive and verify source signature (boo#1085780)

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 CORS restrictions, obtain sensitive information, or execute arbitrary code. (CVE-2018-12359, CVE-2018-12360, CVE-2018-12362, CVE-2018-12363, CVE-2018-12364, CVE-2018-12365, CVE-2018-12366)

It was discovered that S/MIME and PGP decryption oracles can be built with HTML emails. An attacker could potentially exploit this to obtain sensitive information. (CVE-2018-12372)

It was discovered that S/MIME plaintext can be leaked through HTML reply/forward. An attacker could potentially exploit this to obtain sensitive information. (CVE-2018-12373)

It was discovered that forms can be used to exfiltrate encrypted mail parts by pressing enter in a form field. An attacker could potentially exploit this to obtain sensitive information. (CVE-2018-12374)