Moderate: perl security and bug fix update

ELSA-2021-1678: perl:5.26 security and bug fix update (MODERATE)

Security update for perl

Security update for perl

Security update for perl

Security update for perl

ELSA-2021-9238: perl security update (IMPORTANT)

ELSA-2021-0343: perl security update (MODERATE)

Perl before 5.30.3 has an integer overflow related to mishandling of a "PL_regkind[OP(n)] == NOTHING" situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction injection. An application written in Perl would only be vulnerable to this flaw if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in this fashion is known to be dangerous since the regular expression engine does not protect against denial of service attacks in this usage scenario.]

Perl before 5.30.3 has an integer overflow related to mishandling of a "PL_regkind[OP(n)] == NOTHING" situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction injection.

Perl before 5.30.3 has an integer overflow related to mishandling of a "PL_regkind[OP(n)] == NOTHING" situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction injection.

Perl before 5.30.3 has an integer overflow related to mishandling of a ...

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow. An application written in Perl would only be vulnerable to this flaw if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in this fashion is known to be dangerous since the regular expression engine does not protect against denial of service attacks in this usage scenario. Additionally, the target system needs a sufficient amount of memory to allocate partial expansions of the nested quantifiers prior to the overflow occurring. This requirement is unlikely to be met on 64bit systems.]

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer over ...

Уязвимость параметра PL_regkind[OP(n)] == NOTHING интерпретатора языка программирования Perl, позволяющая нарушителю выполнить произвольный код

Уязвимость интерпретатора языка программирования Perl, связанная с выходом операции за границы буфера в памяти, позволяющая нарушителю вызвать отказ в обслуживании