Sensitive data could be exposed to non- privileged users in a configuration file. Local access to the computer with a low- privileged account is required to access the configuration file containing the sensitive data.

An integer overflow in the RFC3164 parser in One Identity syslog-ng 3.0 through 3.37 allows remote attackers to cause a Denial of Service via crafted syslog input that is mishandled by the tcp or network function. syslog-ng Premium Edition 7.0.30 and syslog-ng Store Box 6.10.0 are also affected.

A UNIX Symbolic Link (Symlink) Following vulnerability in the packaging of syslog-ng of SUSE Linux Enterprise Debuginfo 11-SP3, SUSE Linux Enterprise Debuginfo 11-SP4, SUSE Linux Enterprise Module for Legacy Software 12, SUSE Linux Enterprise Point of Sale 11-SP3, SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Linux Enterprise Server for SAP 12-SP1; openSUSE Backports SLE-15-SP1, openSUSE Leap 15.1 allowed local attackers controlling the user news to escalate their privileges to root. This issue affects: SUSE Linux Enterprise Debuginfo 11-SP3 syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Debuginfo 11-SP4 syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Module for Legacy Software 12 syslog-ng versions prior to 3.6.4-12.8.1. SUSE Linux Enterprise Point of Sale 11-SP3 syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Server 11-SP4-LTSS syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Server for SAP 12-S…

lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.

Balabit syslog-ng 2.0, 3.0, 3.1, 3.2 OSE and PE, when running on FreeBSD or HP-UX, does not properly perform cast operations, which causes syslog-ng to use a default value of -1 to create log files with insecure permissions (07777), which allows local users to read and write to these log files.

syslog-ng does not call chdir when it calls chroot, which might allow attackers to escape the intended jail. NOTE: this is only a vulnerability when a separate vulnerability is present. This flaw affects syslog-ng versions prior to and including 2.0.9.

Balabit syslog-ng 2.0.x before 2.0.6 and 2.1.x before 2.1.8 allows remote attackers to cause a denial of service (crash) via a message with a timestamp that does not contain a trailing space, which triggers a NULL pointer dereference.

Balabit Syslog-NG 1.4.x before 1.4.15, and 1.5.x before 1.5.20, when using template filenames or output, does not properly track the size of a buffer when constant characters are encountered during macro expansion, which allows remote attackers to cause a denial of service and possibly execute arbitrary code.

Balabit syslog-ng allows remote attackers to cause a denial of service (application crash) via a malformed log message that does not have a closing > in the priority specifier.