[security][HIGH] rsync 3.4.1: 3 CVE require triage #1

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opened 2026-05-25 00:46:42 +03:00 by sbelikov · 1 comment

sbelikov commented

2026-05-25 00:46:42 +03:00

Owner

CVE triage request / Запрос на разбор CVE

Package / Пакет

Package: rsync
Version: 3.4.1
EVR: 3.4.1-1
Category: -
Policy class: -
NiceOS policy class: -
Owner: -
Severity: HIGH
Max CVSS: 7.8
CVE count: 3

LLM recommendation / Рекомендация LLM

RU

Для пакета rsync 3.4.1 найдены CVE-кандидаты по данным NVD/CPE: CVE-2026-29518, CVE-2026-41035, CVE-2026-43619. Требуется triage security-team.

Проверить применимость CVE к сборке НАЙС.ОС, сопоставить с upstream/vendor advisory, определить статус affected/fixed/not_affected и при необходимости подготовить обновление пакета.

Рекомендуемое действие: needs_triage

Подсказка по целевой версии: -

Проверки: Проверить сборку RPM, обновление пакета, совместимость зависимостей, service/CLI smoke tests и регрессионные сценарии по классу пакета.

Риски: Автоматическое совпадение NVD/CPE не является финальным вердиктом по НАЙС.ОС.

EN

NVD/CPE candidate CVEs were found for rsync 3.4.1: CVE-2026-29518, CVE-2026-41035, CVE-2026-43619. Security-team triage is required.

Verify CVE applicability to the NiceOS build, compare with upstream/vendor advisories, set affected/fixed/not_affected status, and prepare a package update if required.

Recommended action: needs_triage

Target version hint: -

Tests: Run RPM build, package upgrade, dependency compatibility, service/CLI smoke tests, and package-class-specific regression tests.

Risks: An automatic NVD/CPE match is not the final NiceOS vulnerability verdict.

CVE candidates from NVD/CPE

CVE	Severity	CVSS	Match	NiceOS status	Reason
CVE-2026-41035	HIGH	7.8	cpe-range	needs_triage	package version is inside version range
CVE-2026-29518	HIGH	7.3	cpe-range	needs_triage	package version is inside version range
CVE-2026-43619	HIGH	7.2	cpe-range	needs_triage	package version is inside version range

Descriptions

CVE-2026-41035

In rsync 3.0.1 through 3.4.1, receive_xattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X (aka --xattrs). On Linux, many (but not all) common configurations are vulnerable. Non-Linux platforms are more widely vulnerable.

CVE-2026-29518

Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path can exploit this race condition to create or overwrite arbitrary files, potentially modifying sensitive system files and achieving privilege escalation when the daemon runs with elevated privileges. This vulnerability can only be triggered if the chroot setting is false.

CVE-2026-43619

Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'.

Maintainer checklist

Verify whether each CVE applies to the NiceOS build.
Compare NVD data with upstream/vendor advisory.
Set final NiceOS status: affected, fixed, not_affected, false_positive, deferred, or not_in_cloud_image.
If affected, decide update/backport strategy according to package policy class.
Run package-class-specific build, upgrade and regression tests.
Add/update niceos_cve_triage entry.
Create NICE-SA advisory if a security update is shipped.

Machine metadata

{
  "cves": [
    "CVE-2026-29518",
    "CVE-2026-41035",
    "CVE-2026-43619"
  ],
  "fingerprint": "e368a23603d243275bf2",
  "generated_at": "2026-05-24T21:46:42Z",
  "package": "rsync",
  "prompt_version": "niceos_cve_issue_analysis_v1",
  "tool": "niceos_cve_create_issues.py",
  "tool_version": "1.0",
  "version": "3.4.1"
}

# CVE triage request / Запрос на разбор CVE ## Package / Пакет - Package: `rsync` - Version: `3.4.1` - EVR: `3.4.1-1` - Category: `-` - Policy class: `-` - NiceOS policy class: `-` - Owner: `-` - Severity: `HIGH` - Max CVSS: `7.8` - CVE count: `3` ## LLM recommendation / Рекомендация LLM ### RU Для пакета rsync 3.4.1 найдены CVE-кандидаты по данным NVD/CPE: CVE-2026-29518, CVE-2026-41035, CVE-2026-43619. Требуется triage security-team. Проверить применимость CVE к сборке НАЙС.ОС, сопоставить с upstream/vendor advisory, определить статус affected/fixed/not_affected и при необходимости подготовить обновление пакета. **Рекомендуемое действие:** `needs_triage` **Подсказка по целевой версии:** `-` **Проверки:** Проверить сборку RPM, обновление пакета, совместимость зависимостей, service/CLI smoke tests и регрессионные сценарии по классу пакета. **Риски:** Автоматическое совпадение NVD/CPE не является финальным вердиктом по НАЙС.ОС. ### EN NVD/CPE candidate CVEs were found for rsync 3.4.1: CVE-2026-29518, CVE-2026-41035, CVE-2026-43619. Security-team triage is required. Verify CVE applicability to the NiceOS build, compare with upstream/vendor advisories, set affected/fixed/not_affected status, and prepare a package update if required. **Recommended action:** `needs_triage` **Target version hint:** `-` **Tests:** Run RPM build, package upgrade, dependency compatibility, service/CLI smoke tests, and package-class-specific regression tests. **Risks:** An automatic NVD/CPE match is not the final NiceOS vulnerability verdict. ## CVE candidates from NVD/CPE | CVE | Severity | CVSS | Match | NiceOS status | Reason | |---|---|---:|---|---|---| | CVE-2026-41035 | HIGH | 7.8 | cpe-range | needs_triage | package version is inside version range | | CVE-2026-29518 | HIGH | 7.3 | cpe-range | needs_triage | package version is inside version range | | CVE-2026-43619 | HIGH | 7.2 | cpe-range | needs_triage | package version is inside version range | ## Descriptions ### CVE-2026-41035 In rsync 3.0.1 through 3.4.1, receive_xattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X (aka --xattrs). On Linux, many (but not all) common configurations are vulnerable. Non-Linux platforms are more widely vulnerable. ### CVE-2026-29518 Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path can exploit this race condition to create or overwrite arbitrary files, potentially modifying sensitive system files and achieving privilege escalation when the daemon runs with elevated privileges. This vulnerability can only be triggered if the chroot setting is false. ### CVE-2026-43619 Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'. ## Maintainer checklist - [ ] Verify whether each CVE applies to the NiceOS build. - [ ] Compare NVD data with upstream/vendor advisory. - [ ] Set final NiceOS status: `affected`, `fixed`, `not_affected`, `false_positive`, `deferred`, or `not_in_cloud_image`. - [ ] If affected, decide update/backport strategy according to package policy class. - [ ] Run package-class-specific build, upgrade and regression tests. - [ ] Add/update `niceos_cve_triage` entry. - [ ] Create `NICE-SA` advisory if a security update is shipped. ## Machine metadata ```json { "cves": [ "CVE-2026-29518", "CVE-2026-41035", "CVE-2026-43619" ], "fingerprint": "e368a23603d243275bf2", "generated_at": "2026-05-24T21:46:42Z", "package": "rsync", "prompt_version": "niceos_cve_issue_analysis_v1", "tool": "niceos_cve_create_issues.py", "tool_version": "1.0", "version": "3.4.1" } ```

sbelikov commented

2026-05-25 02:07:03 +03:00

Author

Owner

rsync 3.4.3 security update for NiceOS 5.2 #2

sbelikov closed this issue

2026-05-25 02:07:03 +03:00