All errata/sisyphus_e2k/ALT-PU-2026-9255-1
ALT-PU-2026-9255-1

Package update nginx in branch sisyphus_e2k

Version1.30.2-alt1
Task#0
Published2026-05-25
Max severityCRITICAL
Severity:

Closed issues (2)

BDU:2026-07182
HIGH8.1

Уязвимость модуля ngx_http_rewrite_module веб-серверов NGINX Plus и NGINX Open Source, позволяющая нарушителю выполнить произвольный код или вызвать отказ в обслуживании

Published: 2026-05-24Modified: 2026-06-21
CVSS 3.xHIGH 8.1
CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0HIGH 7.6
CVSS:2.0/AV:N/AC:H/Au:N/C:C/I:C/A:C
CVE-2026-9256
CRITICAL9.2

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression (PCRE) captures (for example, ^/((.*))$) and a replacement string that references multiple such captures (for example, $1$2) in a redirect or arguments context. An unauthenticated attacker along with conditions beyond their control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Published: 2026-05-22Modified: 2026-06-18
CVSS 3.xHIGH 8.1
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0CRITICAL 9.2
CVSS:4.0/CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X