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By the Year

In 2022 there have been 0 vulnerabilities in Rsyslog . Rsyslog did not have any published security vulnerabilities last year.

Year Vulnerabilities Average Score
2022 0 0.00
2021 0 0.00
2020 0 0.00
2019 4 9.23
2018 0 0.00

It may take a day or so for new Rsyslog vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.

Recent Rsyslog Security Vulnerabilities

An issue was discovered in Rsyslog v8.1908.0

CVE-2019-17041 9.8 - Critical - October 07, 2019

An issue was discovered in Rsyslog v8.1908.0. contrib/pmaixforwardedfrom/pmaixforwardedfrom.c has a heap overflow in the parser for AIX log messages. The parser tries to locate a log message delimiter (in this case, a space or a colon) but fails to account for strings that do not satisfy this constraint. If the string does not match, then the variable lenMsg will reach the value zero and will skip the sanity check that detects invalid log messages. The message will then be considered valid, and the parser will eat up the nonexistent colon delimiter. In doing so, it will decrement lenMsg, a signed integer, whose value was zero and now becomes minus one. The following step in the parser is to shift left the contents of the message. To do this, it will call memmove with the right pointers to the target and destination strings, but the lenMsg will now be interpreted as a huge value, causing a heap overflow.

Memory Corruption

An issue was discovered in Rsyslog v8.1908.0

CVE-2019-17042 9.8 - Critical - October 07, 2019

An issue was discovered in Rsyslog v8.1908.0. contrib/pmcisconames/pmcisconames.c has a heap overflow in the parser for Cisco log messages. The parser tries to locate a log message delimiter (in this case, a space or a colon), but fails to account for strings that do not satisfy this constraint. If the string does not match, then the variable lenMsg will reach the value zero and will skip the sanity check that detects invalid log messages. The message will then be considered valid, and the parser will eat up the nonexistent colon delimiter. In doing so, it will decrement lenMsg, a signed integer, whose value was zero and now becomes minus one. The following step in the parser is to shift left the contents of the message. To do this, it will call memmove with the right pointers to the target and destination strings, but the lenMsg will now be interpreted as a huge value, causing a heap overflow.

Improper Input Validation

contrib/pmdb2diag/pmdb2diag.c in Rsyslog v8.1908.0

CVE-2019-17040 9.8 - Critical - September 30, 2019

contrib/pmdb2diag/pmdb2diag.c in Rsyslog v8.1908.0 allows out-of-bounds access because the level length is mishandled.

Out-of-bounds Read

A denial of service vulnerability was found in rsyslog in the imptcp module

CVE-2018-16881 7.5 - High - January 25, 2019

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash. Versions before 8.27.0 are vulnerable.

Integer Overflow or Wraparound

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