Описание
Vim is an open source, command line text editor. Prior to version 9.2.0450, a heap buffer overflow exists in read_compound() in src/spellfile.c when loading a crafted spell file (.spl) with UTF-8 encoding active. An attacker-controlled length field in the spell file's compound section overflows a 32-bit signed integer multiplication, causing a small buffer to be allocated for a write loop that runs many iterations, overflowing the heap. Because the 'spelllang' option can be set from a modeline, a text file modeline can trigger spell file loading if a malicious .spl file has been planted on the runtimepath. This issue has been patched in version 9.2.0450.
A flaw was found in Vim, an open-source command-line text editor. A heap buffer overflow exists in the read_compound() function when processing a specially crafted spell file (.spl) with UTF-8 encoding active. A remote attacker could exploit this by convincing a user to open a text file containing a malicious modeline, which could then load a planted malicious spell file. This could lead to a heap overflow, potentially resulting in an application-level denial of service.
Отчет
This Moderate flaw in Vim arises from a heap buffer overflow when processing specially crafted spell files with UTF-8 encoding. Exploitation requires user interaction, specifically opening a text file containing a malicious modeline that points to a planted, malicious spell file. This limits the attack vector to scenarios where an attacker can control both the text file and the spell file on the user's system, leading primarily to application-level denial of service.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | vim | Fix deferred | ||
| Red Hat Enterprise Linux 6 | vim | Out of support scope | ||
| Red Hat Enterprise Linux 7 | vim | Fix deferred | ||
| Red Hat Enterprise Linux 8 | vim | Fix deferred | ||
| Red Hat Enterprise Linux 9 | vim | Fix deferred | ||
| Red Hat OpenShift Container Platform 4 | rhcos | Fix deferred |
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Дополнительная информация
Статус:
EPSS
6.6 Medium
CVSS3
Связанные уязвимости
Vim is an open source, command line text editor. Prior to version 9.2.0450, a heap buffer overflow exists in read_compound() in src/spellfile.c when loading a crafted spell file (.spl) with UTF-8 encoding active. An attacker-controlled length field in the spell file's compound section overflows a 32-bit signed integer multiplication, causing a small buffer to be allocated for a write loop that runs many iterations, overflowing the heap. Because the 'spelllang' option can be set from a modeline, a text file modeline can trigger spell file loading if a malicious .spl file has been planted on the runtimepath. This issue has been patched in version 9.2.0450.
Vim is an open source, command line text editor. Prior to version 9.2.0450, a heap buffer overflow exists in read_compound() in src/spellfile.c when loading a crafted spell file (.spl) with UTF-8 encoding active. An attacker-controlled length field in the spell file's compound section overflows a 32-bit signed integer multiplication, causing a small buffer to be allocated for a write loop that runs many iterations, overflowing the heap. Because the 'spelllang' option can be set from a modeline, a text file modeline can trigger spell file loading if a malicious .spl file has been planted on the runtimepath. This issue has been patched in version 9.2.0450.
Vim is an open source, command line text editor. Prior to version 9.2. ...
EPSS
6.6 Medium
CVSS3