Описание
Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer. A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.
| Релиз | Статус | Примечание |
|---|---|---|
| devel | not-affected | 5.40.1-8ubuntu1 |
| esm-infra-legacy/trusty | released | 5.18.2-2ubuntu1.7+esm7 |
| esm-infra-legacy/xenial | released | 5.22.1-9ubuntu0.9+esm2 |
| esm-infra/bionic | released | 5.26.1-6ubuntu0.7+esm2 |
| esm-infra/focal | released | 5.30.0-9ubuntu0.5+esm2 |
| jammy | released | 5.34.0-3ubuntu1.7 |
| noble | released | 5.38.2-3.2ubuntu0.3 |
| questing | released | 5.40.1-6ubuntu0.1 |
| resolute | released | 5.40.1-7ubuntu0.1 |
| upstream | released | 5.40.1-8 |
Показывать по
EPSS
9.8 Critical
CVSS3
Связанные уязвимости
Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer. A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.
Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.11 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer. A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.
Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds
Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5 ...
Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer. A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.
EPSS
9.8 Critical
CVSS3