Описание
A flaw was identified in the NTLM authentication handling of the libsoup HTTP library, used by GNOME and other applications for network communication. When processing extremely long passwords, an internal size calculation can overflow due to improper use of signed integers. This results in incorrect memory allocation on the stack, followed by unsafe memory copying. As a result, applications using libsoup may crash unexpectedly, creating a denial-of-service risk.
Отчет
The Red Hat Product Security team has assessed this vulnerability as Important severity due to its remote exploitability and lack of authentication requirements. Successful exploitation allows an attacker to crash any client or service using libsoup’s NTLM authentication mechanism. The root cause is improper handling of signed integer arithmetic, which leads to stack buffer overflow and 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 6 | libsoup | Out of support scope | ||
| Red Hat Enterprise Linux 10 | libsoup3 | Fixed | RHSA-2026:2182 | 05.02.2026 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | libsoup3 | Fixed | RHSA-2026:2006 | 05.02.2026 |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | libsoup | Fixed | RHSA-2026:2628 | 12.02.2026 |
| Red Hat Enterprise Linux 8 | spice-client-win | Fixed | RHSA-2026:2214 | 09.02.2026 |
| Red Hat Enterprise Linux 8 | libsoup | Fixed | RHSA-2026:2215 | 09.02.2026 |
| Red Hat Enterprise Linux 8 | libsoup | Fixed | RHSA-2026:2215 | 09.02.2026 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | libsoup | Fixed | RHSA-2026:2396 | 10.02.2026 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | spice-client-win | Fixed | RHSA-2026:2513 | 11.02.2026 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | libsoup | Fixed | RHSA-2026:2402 | 10.02.2026 |
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Дополнительная информация
Статус:
EPSS
8.6 High
CVSS3
Связанные уязвимости
A flaw was identified in the NTLM authentication handling of the libsoup HTTP library, used by GNOME and other applications for network communication. When processing extremely long passwords, an internal size calculation can overflow due to improper use of signed integers. This results in incorrect memory allocation on the stack, followed by unsafe memory copying. As a result, applications using libsoup may crash unexpectedly, creating a denial-of-service risk.
A flaw was identified in the NTLM authentication handling of the libsoup HTTP library, used by GNOME and other applications for network communication. When processing extremely long passwords, an internal size calculation can overflow due to improper use of signed integers. This results in incorrect memory allocation on the stack, followed by unsafe memory copying. As a result, applications using libsoup may crash unexpectedly, creating a denial-of-service risk.
Libsoup: signed to unsigned conversion error leading to stack-based buffer overflow in libsoup ntlm authentication
A flaw was identified in the NTLM authentication handling of the libso ...
EPSS
8.6 High
CVSS3