ELA-292-1 libonig security update

Buffer overwrite

Related CVEs CVE-2020-26159

In Oniguruma, an attacker able to supply a regular expression for compilation may be able to overflow a buffer by one byte in concat_opt_exact_info_str & concat_opt_exact_info in regcomp.c.

Besides, there were other other issues like resource leaks in bbuf_clone(), not_code_range_buf(), etc in regparse.c and some other issues that needed fixing as well.

For Debian 8 jessie, these problems have been fixed in version 5.9.5-3.2+deb8u5.

We recommend that you upgrade your libonig packages.

Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/