CVE-2018-12019

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.

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)

Updated thunderbird package fixes security vulnerabilities:

• Spoofing of Email signatures II: The signature verification routine in Enigmail interpreted User IDs as status/control messages and did not correctly keep track of the status of multiple signatures. This allowed remote attackers to spoof arbitrary email signatures via public keys containing crafted primary user ids (CVE-2018-12019).

• Spoofing of Email signatures I: GnuPG 2.2.8 fixed a security bug that allows remote attackers to spoof arbitrary email signatures via the embedded "--filename" parameter in OpenPGP literal data packets. This release of Enigmail prevents the exploit for all versions of GnuPG, i.e. also if GnuPG is not updated (CVE-2018-12020).

These are all security issues fixed in the enigmail-2.2.4-1.4 package on the GA media of openSUSE Tumbleweed.

This update for enigmail to 2.0.7 fixes the following issues:

These security issues were fixed:

• CVE-2018-12020: Mitigation against GnuPG signature spoofing: Email signatures could be spoofed via an embedded '--filename' parameter in OpenPGP literal data packets. This update prevents this issue from being exploited if GnuPG was not updated (boo#1096745)
• CVE-2018-12019: The signature verification routine interpreted User IDs as status/control messages and did not correctly keep track of the status of multiple signatures. This allowed remote attackers to spoof arbitrary email signatures via public keys containing crafted primary user ids (boo#1097525)
• Disallow plaintext (literal packets) outside of encrpyted packets
• Replies to a partially encrypted message may have revealed protected information - no longer display PGP/MIME message part followed by unencrypted data (bsc#1094781)
• Fix signature Spoofing via Inline-PGP in HTML Mails

These non-security issues were fixed:

• Fix filter actions forgetting selected mail folder names
• Fix compatibility issue with Thunderbird 60b7