Vulnerability-Lookup

CNVD-2016-01709

Vulnerability from cnvd - Published: 2016-03-17

Title

Debian jessie glibc权限获取漏洞

Description

Debian是Debian Project合作组织创建的以Linux或FreeBSD为内核的自由操作系统。该操作系统所使用的基础工具大部分来源于GNU。jessie是Debian其中的一个分支版本。glibc（又名GNU C Library，libc6）package是其中的一个按照LGPL许可协议发布的开源免费的C语言编译程序包。 Debian jessie上的glibc 2.19-18+deb8u4之前版本中的pt_chown中存在安全漏洞，该漏洞源于程序未能执行与文件描述符传递相关的命名空间检查。本地攻击者可借助pts读取和写入操作利用该漏洞捕获键盘输入，伪造数据，获取权限。

Severity

高

Patch Name

Debian jessie glibc权限获取漏洞的补丁

Patch Description

Formal description

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958

Reference

http://www.openwall.com/lists/oss-security/2016/02/23/3 http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/

Impacted products

Name
Debian glibc package <2.19-18+deb8u4

Show details on source website

JSON

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      "cveNumber": "CVE-2016-2856"
    }
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  "number": "CNVD-2016-01709",
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  "submitTime": "2016-03-16",
  "title": "Debian jessie glibc\u6743\u9650\u83b7\u53d6\u6f0f\u6d1e"
}

CVE-2016-2856 (GCVE-0-2016-2856)

Vulnerability from cvelistv5 – Published: 2016-03-14 01:00 – Updated: 2024-08-05 23:40

Summary

pt_chown in the glibc package before 2.19-18+deb8u4 on Debian jessie; the elibc package before 2.15-0ubuntu10.14 on Ubuntu 12.04 LTS and before 2.19-0ubuntu6.8 on Ubuntu 14.04 LTS; and the glibc package before 2.21-0ubuntu4.2 on Ubuntu 15.10 and before 2.23-0ubuntu1 on Ubuntu 16.04 LTS and 16.10 lacks a namespace check associated with file-descriptor passing, which allows local users to capture keystrokes and spoof data, and possibly gain privileges, via pts read and write operations, related to debian/sysdeps/linux.mk. NOTE: this is not considered a vulnerability in the upstream GNU C Library because the upstream documentation has a clear security recommendation against the --enable-pt_chown option.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2291 records in the last 180 days details

References

9 references

URL	Tags
http://www.halfdog.net/Security/2015/PtChownArbit…	x_refsource_MISC
http://anonscm.debian.org/cgit/pkg-glibc/glibc.gi…	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2016/03/07/2	mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/84601	vdb-entryx_refsource_BID
http://www.ubuntu.com/usn/USN-2985-2	vendor-advisoryx_refsource_UBUNTU
http://people.canonical.com/~ubuntu-security/cve/…	x_refsource_CONFIRM
http://anonscm.debian.org/cgit/pkg-glibc/glibc.gi…	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2016/02/23/3	mailing-listx_refsource_MLIST
http://www.ubuntu.com/usn/USN-2985-1	vendor-advisoryx_refsource_UBUNTU

Date Public

2016-02-23 00:00

Show details on NVD website

JSON

To clipboard

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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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