Описание
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
A flaw was found in GnuPG. An attacker can provide crafted input to the armor_filter function, which incorrectly increments an index variable, leading to an out-of-bounds write. This memory corruption vulnerability may allow for information disclosure and could potentially lead to arbitrary code execution.
Отчет
This vulnerability is rated Important for Red Hat products. The flaw in GnuPG's armor_filter function allows an attacker with local access to provide crafted input, potentially leading to information disclosure and arbitrary code execution due to an out-of-bounds write. Exploitation requires high attack complexity.
Меры по смягчению последствий
To mitigate this issue, users should avoid processing untrusted or unverified input with GnuPG. Exercise caution when handling GnuPG-encrypted or signed data from unknown or suspicious sources, as specially crafted input could trigger the vulnerability. This operational control reduces the attack surface by limiting exposure to malicious data.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | gnupg2 | Out of support scope | ||
| Red Hat Enterprise Linux 10 | gnupg2 | Fixed | RHSA-2026:0697 | 15.01.2026 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | gnupg2 | Fixed | RHSA-2026:1629 | 02.02.2026 |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | gnupg2 | Fixed | RHSA-2026:1677 | 02.02.2026 |
| Red Hat Enterprise Linux 8 | gnupg2 | Fixed | RHSA-2026:0728 | 15.01.2026 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | gnupg2 | Fixed | RHSA-2026:1468 | 28.01.2026 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | gnupg2 | Fixed | RHSA-2026:1014 | 22.01.2026 |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | gnupg2 | Fixed | RHSA-2026:1014 | 22.01.2026 |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | gnupg2 | Fixed | RHSA-2026:0974 | 22.01.2026 |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service | gnupg2 | Fixed | RHSA-2026:0974 | 22.01.2026 |
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Дополнительная информация
Статус:
EPSS
7.8 High
CVSS3
Связанные уязвимости
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
In GnuPG through 2.4.8, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments ...
EPSS
7.8 High
CVSS3