CVE-2026-82717-unbound-AtomGit

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CVE-2026-82717 #131

openLiBingCI创建于 18 天前关闭于 6 天前

18 天前创建

一、漏洞信息
漏洞编号：CVE-2026-82717
漏洞归属组件：unbound
漏洞归属的版本：1.10.1,1.11.0,1.13.2,1.17.0,1.17.1,1.25.1,1.25.2
CVSS评分：
BaseScore：9.8 Critical
Vector：CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
漏洞简述：
In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.
漏洞公开时间：2026-09-16 17:17:06
漏洞创建时间：2026-09-17 01:42:58
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2026-82717

更多参考(点击展开)

无

漏洞分析指导链接：
https://atomgit.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
漏洞数据来源:
其他
漏洞补丁信息：

详情(点击展开)

无

二、漏洞分析结构反馈
影响性分析说明：
In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.
openEuler评分：
9.8
Vector：CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
受影响版本排查(受影响/不受影响)：
1.master(1.26.1):受影响
2.openEuler-20.03-LTS-SP4(1.11.0):受影响
3.openEuler-22.03-LTS-SP4(1.13.2):受影响
4.openEuler-24.03-LTS-Next(1.17.1):受影响
5.openEuler-24.03-LTS-SP1(1.17.1):受影响
6.openEuler-24.03-LTS-SP3(1.17.1):受影响
7.openEuler-24.03-LTS-SP4(1.17.1):受影响

修复是否涉及abi变化(是/否)：
1.master(1.26.1):否
2.openEuler-20.03-LTS-SP4(1.11.0):否
3.openEuler-22.03-LTS-SP4(1.13.2):否
4.openEuler-24.03-LTS-Next(1.17.1):否
5.openEuler-24.03-LTS-SP1(1.17.1):否
6.openEuler-24.03-LTS-SP3(1.17.1):否
7.openEuler-24.03-LTS-SP4(1.17.1):否

原因说明：
1.master(1.26.1):正常修复
2.openEuler-20.03-LTS-SP4(1.11.0):正常修复
3.openEuler-22.03-LTS-SP4(1.13.2):正常修复
4.openEuler-24.03-LTS-Next(1.17.1):正常修复
5.openEuler-24.03-LTS-SP1(1.17.1):正常修复
6.openEuler-24.03-LTS-SP3(1.17.1):正常修复
7.openEuler-24.03-LTS-SP4(1.17.1):正常修复

O openLiBingCI成员

18 天前添加了label：CVE/UNFIXED

分支状态	原因说明	使用场景
受影响	正常修复	受影响且需要修复（包含升级版本修复）的漏洞；受影响且已经修复的漏洞（历史修复PR也需要关联issue）；若因特殊原因无法修复，应修改原因说明为【不修复-特殊原因】，并在安委会备案相关情况。
受影响	暂不修复-漏洞仍在分析中	已关注到相关漏洞，正在处理，未明确漏洞影响和修复方案。
受影响	暂不修复-暂无解决方案或补丁	当前没有可用的修复或补救措施。【影响性分析】中应包含有关为什么没有修复或补救措施的详细说明、上游相关PR等。
受影响	不修复-超出修复范围	没有漏洞的修复计划。当版本停维、软件包宣布生命周期终止或弃用使用。
受影响	不修复-特殊原因导致不再修复	如存在其他特殊情况不修复相关漏洞，或评估后无法升级修复，应在openEuler社区安全委员会例会进行说明备案。【影响性分析】中应包含不发布修复的详细说明、特殊情况还应有安委会会议纪要。
不受影响	不受影响-组件不存在	软件不受影响，因为易受攻击的组件不在产品中。
不受影响	不受影响-已有内置的内联控制或缓解措施	内置的内联控制或缓解措施可防止攻击者利用漏洞
不受影响	不受影响-漏洞代码不能被攻击者触发	易受攻击的组件存在，并且该组件包含易受攻击的代码。但是，易受攻击的代码的使用方式使得攻击者无法进行任何预期的攻击。
不受影响	不受影响-漏洞代码不在执行路径	易受影响的代码在执行过程中不可访问，包括产品的非预期状态。产品不使用也不执行的组件。
不受影响	不受影响-漏洞代码不存在	产品不受影响，因为漏洞背后的代码在产品中不存在。与component_not_present不同的是，有问题的组件存在，但由于某种原因（例如安全的编译器选项）使漏洞的特定代码不存在于组件中。

参考网址	关联pr	状态	补丁链接
https://www.opencve.io/cve/CVE-2026-82717
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2026-82717
https://security-tracker.debian.org/tracker/CVE-2026-82717
http://www.cnnvd.org.cn/web/vulnerability/queryLds.tag?qcvCnnvdid=CVE-2026-82717
https://nvd.nist.gov/vuln/detail/CVE-2026-82717
https://ubuntu.com/security/CVE-2026-82717	None	None	https://discourse.ubuntu.com/c/project

状态	分析项目	内容
已分析	1.影响性分析说明	In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.
已分析	2.openEulerScore	9.8
已分析	3.openEulerVector	AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
已分析	4.受影响版本排查	master:受影响,openEuler-20.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP4:受影响,openEuler-24.03-LTS-Next:受影响,openEuler-24.03-LTS-SP1:受影响,openEuler-24.03-LTS-SP3:受影响,openEuler-24.03-LTS-SP4:受影响
已分析	5.是否涉及abi变化	master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否,openEuler-24.03-LTS-SP3:否,openEuler-24.03-LTS-SP4:否
已分析	6.原因说明	master:正常修复,openEuler-20.03-LTS-SP4:正常修复,openEuler-22.03-LTS-SP4:正常修复,openEuler-24.03-LTS-Next:正常修复,openEuler-24.03-LTS-SP1:正常修复,openEuler-24.03-LTS-SP3:正常修复,openEuler-24.03-LTS-SP4:正常修复

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