CVE-2020-15397

HylaFAX+ through 7.0.2 and HylaFAX Enterprise have scripts that execute binaries from directories writable by unprivileged users (e.g., locations under /var/spool/hylafax that are writable by the uucp account). This allows these users to execute code in the context of the user calling these binaries (often root).

In HylaFAX+ through 7.0.2, the faxsetup utility calls chown on files in user-owned directories. By winning a race, a local attacker could use this to escalate his privileges to root (CVE-2020-15396).

HylaFAX+ through 7.0.2 has scripts that execute binaries from directories writable by unprivileged users (e.g., locations under /var/spool/hylafax that are writable by the uucp account). This allows these users to execute code in the context of the user calling these binaries (often root) (CVE-2020-15397).

The hylafax+ package has been updated to version 7.0.3, fixing thesee issues and several other bugs.

This update for hylafax+ fixes the following issues:

Hylafax was updated to upstream version 7.0.3.

Security issues fixed:

• CVE-2020-15396: Secure temporary directory creation for faxsetup, faxaddmodem, and probemodem (boo#1173521).
• CVE-2020-15397: Sourcing of files into binaries from user writeable directories (boo#1173519).

Non-security issues fixed:

• add UseSSLFax feature in sendfax, sendfax.conf, hyla.conf, and JobControl (31 Jul 2020)
• be more resilient in listening for the Phase C carrier (30 Jul 2020)
• make sure to return to command mode if HDLC receive times out (29 Jul 2020)
• make faxmail ignore boundaries on parts other than multiparts (29 Jul 2020)
• don't attempt to write zero bytes of data to a TIFF (29 Jul 2020)
• don't ever respond to CRP with CRP (28 Jul 2020)
• reset frame counter when a sender retransmits PPS for a previously confirmed ECM block (26 Jul 2020)
• scrutinize PPM before concluding that the sender missed our MCF (23 Jul 2020)
• fix modem recovery after SSL Fax failure (22, 26 Jul 2020)
• ignore echo of PPR, RTN, CRP (10, 13, 21 Jul 2020)
• attempt to handle NSF/CSI/DIS in Class 1 sending Phase D (6 Jul 2020)
• run scripts directly rather than invoking them via a shell for security hardening (3-5 Jul 2020)
• add senderFumblesECM feature (3 Jul 2020)
• add support for PIN/PIP/PRI-Q/PPS-PRI-Q signals, add senderConfusesPIN feature, and utilize PIN for rare conditions where it may be helpful (2, 6, 13-14 Jul 2020)
• add senderConfusesRTN feature (25-26 Jun 2020)
• add MissedPageHandling feature (24 Jun 2020)
• use and handle CFR in Phase D to retransmit Phase C (16, 23 Jun 2020)
• cope with hearing echo of RR, CTC during Class 1 sending (15-17 Jun 2020)
• fix listening for retransmission of MPS/EOP/EOM if it was received corrupt on the first attempt (15 Jun 2020)
• don't use CRP when receiving PPS/PPM as some senders think we are sending MCF (12 Jun 2020)
• add BR_SSLFAX to show SSL Fax in notify and faxinfo output (1 Jun 2020)
• have faxinfo put units on non-standard page dimensions (28 May 2020)
• improve error messages for JobHost connection errors (22 May 2020)
• fix perpetual blocking of jobs when a job preparation fails, attempt to fix similar blocking problems for bad jobs in batches, and add 'unblock' faxconfig feature (21 May 2020)
• ignore TCF if we're receiving an SSL Fax (31 Jan 2020)
• fixes for build on FreeBSD 12.1 (31 Jan - 3 Feb 2020)

This update for hylafax+ fixes the following issues:

Hylafax was updated to upstream version 7.0.3.

Security issues fixed:

• CVE-2020-15396: Secure temporary directory creation for faxsetup, faxaddmodem, and probemodem (boo#1173521).
• CVE-2020-15397: Sourcing of files into binaries from user writeable directories (boo#1173519).

Non-security issues fixed:

• add UseSSLFax feature in sendfax, sendfax.conf, hyla.conf, and JobControl (31 Jul 2020)
• be more resilient in listening for the Phase C carrier (30 Jul 2020)
• make sure to return to command mode if HDLC receive times out (29 Jul 2020)
• make faxmail ignore boundaries on parts other than multiparts (29 Jul 2020)
• don't attempt to write zero bytes of data to a TIFF (29 Jul 2020)
• don't ever respond to CRP with CRP (28 Jul 2020)
• reset frame counter when a sender retransmits PPS for a previously confirmed ECM block (26 Jul 2020)
• scrutinize PPM before concluding that the sender missed our MCF (23 Jul 2020)
• fix modem recovery after SSL Fax failure (22, 26 Jul 2020)
• ignore echo of PPR, RTN, CRP (10, 13, 21 Jul 2020)
• attempt to handle NSF/CSI/DIS in Class 1 sending Phase D (6 Jul 2020)
• run scripts directly rather than invoking them via a shell for security hardening (3-5 Jul 2020)
• add senderFumblesECM feature (3 Jul 2020)
• add support for PIN/PIP/PRI-Q/PPS-PRI-Q signals, add senderConfusesPIN feature, and utilize PIN for rare conditions where it may be helpful (2, 6, 13-14 Jul 2020)
• add senderConfusesRTN feature (25-26 Jun 2020)
• add MissedPageHandling feature (24 Jun 2020)
• use and handle CFR in Phase D to retransmit Phase C (16, 23 Jun 2020)
• cope with hearing echo of RR, CTC during Class 1 sending (15-17 Jun 2020)
• fix listening for retransmission of MPS/EOP/EOM if it was received corrupt on the first attempt (15 Jun 2020)
• don't use CRP when receiving PPS/PPM as some senders think we are sending MCF (12 Jun 2020)
• add BR_SSLFAX to show SSL Fax in notify and faxinfo output (1 Jun 2020)
• have faxinfo put units on non-standard page dimensions (28 May 2020)
• improve error messages for JobHost connection errors (22 May 2020)
• fix perpetual blocking of jobs when a job preparation fails, attempt to fix similar blocking problems for bad jobs in batches, and add 'unblock' faxconfig feature (21 May 2020)
• ignore TCF if we're receiving an SSL Fax (31 Jan 2020)
• fixes for build on FreeBSD 12.1 (31 Jan - 3 Feb 2020)

This update for hylafax+ fixes the following issues:

Hylafax was updated to upstream version 7.0.3.

Security issues fixed:

• CVE-2020-15396: Secure temporary directory creation for faxsetup, faxaddmodem, and probemodem (boo#1173521).
• CVE-2020-15397: Sourcing of files into binaries from user writeable directories (boo#1173519).

Non-security issues fixed:

• add UseSSLFax feature in sendfax, sendfax.conf, hyla.conf, and JobControl (31 Jul 2020)
• be more resilient in listening for the Phase C carrier (30 Jul 2020)
• make sure to return to command mode if HDLC receive times out (29 Jul 2020)
• make faxmail ignore boundaries on parts other than multiparts (29 Jul 2020)
• don't attempt to write zero bytes of data to a TIFF (29 Jul 2020)
• don't ever respond to CRP with CRP (28 Jul 2020)
• reset frame counter when a sender retransmits PPS for a previously confirmed ECM block (26 Jul 2020)
• scrutinize PPM before concluding that the sender missed our MCF (23 Jul 2020)
• fix modem recovery after SSL Fax failure (22, 26 Jul 2020)
• ignore echo of PPR, RTN, CRP (10, 13, 21 Jul 2020)
• attempt to handle NSF/CSI/DIS in Class 1 sending Phase D (6 Jul 2020)
• run scripts directly rather than invoking them via a shell for security hardening (3-5 Jul 2020)
• add senderFumblesECM feature (3 Jul 2020)
• add support for PIN/PIP/PRI-Q/PPS-PRI-Q signals, add senderConfusesPIN feature, and utilize PIN for rare conditions where it may be helpful (2, 6, 13-14 Jul 2020)
• add senderConfusesRTN feature (25-26 Jun 2020)
• add MissedPageHandling feature (24 Jun 2020)
• use and handle CFR in Phase D to retransmit Phase C (16, 23 Jun 2020)
• cope with hearing echo of RR, CTC during Class 1 sending (15-17 Jun 2020)
• fix listening for retransmission of MPS/EOP/EOM if it was received corrupt on the first attempt (15 Jun 2020)
• don't use CRP when receiving PPS/PPM as some senders think we are sending MCF (12 Jun 2020)
• add BR_SSLFAX to show SSL Fax in notify and faxinfo output (1 Jun 2020)
• have faxinfo put units on non-standard page dimensions (28 May 2020)
• improve error messages for JobHost connection errors (22 May 2020)
• fix perpetual blocking of jobs when a job preparation fails, attempt to fix similar blocking problems for bad jobs in batches, and add 'unblock' faxconfig feature (21 May 2020)
• ignore TCF if we're receiving an SSL Fax (31 Jan 2020)
• fixes for build on FreeBSD 12.1 (31 Jan - 3 Feb 2020)

This update was imported from the openSUSE:Leap:15.1:Update update project.

This update for hylafax+ fixes the following issues:

Hylafax was updated to upstream version 7.0.3.

Security issues fixed:

• CVE-2020-15396: Secure temporary directory creation for faxsetup, faxaddmodem, and probemodem (boo#1173521).
• CVE-2020-15397: Sourcing of files into binaries from user writeable directories (boo#1173519).

Non-security issues fixed:

• add UseSSLFax feature in sendfax, sendfax.conf, hyla.conf, and JobControl (31 Jul 2020)
• be more resilient in listening for the Phase C carrier (30 Jul 2020)
• make sure to return to command mode if HDLC receive times out (29 Jul 2020)
• make faxmail ignore boundaries on parts other than multiparts (29 Jul 2020)
• don't attempt to write zero bytes of data to a TIFF (29 Jul 2020)
• don't ever respond to CRP with CRP (28 Jul 2020)
• reset frame counter when a sender retransmits PPS for a previously confirmed ECM block (26 Jul 2020)
• scrutinize PPM before concluding that the sender missed our MCF (23 Jul 2020)
• fix modem recovery after SSL Fax failure (22, 26 Jul 2020)
• ignore echo of PPR, RTN, CRP (10, 13, 21 Jul 2020)
• attempt to handle NSF/CSI/DIS in Class 1 sending Phase D (6 Jul 2020)
• run scripts directly rather than invoking them via a shell for security hardening (3-5 Jul 2020)
• add senderFumblesECM feature (3 Jul 2020)
• add support for PIN/PIP/PRI-Q/PPS-PRI-Q signals, add senderConfusesPIN feature, and utilize PIN for rare conditions where it may be helpful (2, 6, 13-14 Jul 2020)
• add senderConfusesRTN feature (25-26 Jun 2020)
• add MissedPageHandling feature (24 Jun 2020)
• use and handle CFR in Phase D to retransmit Phase C (16, 23 Jun 2020)
• cope with hearing echo of RR, CTC during Class 1 sending (15-17 Jun 2020)
• fix listening for retransmission of MPS/EOP/EOM if it was received corrupt on the first attempt (15 Jun 2020)
• don't use CRP when receiving PPS/PPM as some senders think we are sending MCF (12 Jun 2020)
• add BR_SSLFAX to show SSL Fax in notify and faxinfo output (1 Jun 2020)
• have faxinfo put units on non-standard page dimensions (28 May 2020)
• improve error messages for JobHost connection errors (22 May 2020)
• fix perpetual blocking of jobs when a job preparation fails, attempt to fix similar blocking problems for bad jobs in batches, and add 'unblock' faxconfig feature (21 May 2020)
• ignore TCF if we're receiving an SSL Fax (31 Jan 2020)
• fixes for build on FreeBSD 12.1 (31 Jan - 3 Feb 2020)

This update was imported from the openSUSE:Leap:15.2:Update update project.

These are all security issues fixed in the hylafax+-7.0.3-5.1 package on the GA media of openSUSE Tumbleweed.