Описание
7-Zip is a file archiver with a high compression ratio. Versions 9.34 through 26.00 contain a heap memory disclosure via SquashFS fragment offset integer overflow on 32-bit builds. 32-bit integer overflow in the SquashFS ReadBlock function allows an attacker-controlled node.Offset value to bypass the fragment bounds check, causing memcpy to read heap memory preceding the cache buffer into the extracted file. The vulnerability is exploitable only on 32-bit builds of 7-Zip where size_t is 32 bits, allowing the addition offsetInBlock + blockSize to wrap modulo 2³². On 64-bit builds the addition is promoted to 64 bits and the check correctly rejects the input. Version 26.01 patches the issue.
| Релиз | Статус | Примечание |
|---|---|---|
| devel | needs-triage | |
| esm-apps/jammy | needs-triage | |
| esm-apps/noble | needs-triage | |
| esm-apps/resolute | needs-triage | |
| jammy | needs-triage | |
| noble | needs-triage | |
| questing | ignored | end of life, was needs-triage |
| resolute | needs-triage | |
| upstream | released | 26.01+dfsg-1 |
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| Релиз | Статус | Примечание |
|---|---|---|
| devel | DNE | |
| esm-apps-legacy/xenial | needs-triage | |
| esm-apps/bionic | needs-triage | |
| esm-apps/focal | needs-triage | |
| esm-apps/jammy | needs-triage | |
| esm-apps/noble | not-affected | |
| esm-infra-legacy/trusty | needs-triage | |
| jammy | needs-triage | |
| noble | not-affected | 16.02+transitional.1 |
| questing | not-affected |
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EPSS
4.3 Medium
CVSS3
Связанные уязвимости
7-Zip is a file archiver with a high compression ratio. Versions 9.34 through 26.00 contain a heap memory disclosure via SquashFS fragment offset integer overflow on 32-bit builds. 32-bit integer overflow in the SquashFS ReadBlock function allows an attacker-controlled node.Offset value to bypass the fragment bounds check, causing memcpy to read heap memory preceding the cache buffer into the extracted file. The vulnerability is exploitable only on 32-bit builds of 7-Zip where size_t is 32 bits, allowing the addition offsetInBlock + blockSize to wrap modulo 2³². On 64-bit builds the addition is promoted to 64 bits and the check correctly rejects the input. Version 26.01 patches the issue.
7-Zip is a file archiver with a high compression ratio. Versions 9.34 ...
Уязвимость функции ReadBlock обработчика файлов SquashFS архиватора 7-Zip, позволяющая нарушителю раскрыть конфиденциальную информацию
EPSS
4.3 Medium
CVSS3