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cnvd-2019-24795
Vulnerability from cnvd
Title
Linux kernel本地提权漏洞（CNVD-2019-24795）
Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。
Linux kernel 5.1.17之前版本中存在安全漏洞，该漏洞源于kernel/ptrace.c文件的ptrace_link未能正确处理对凭证的记录。攻击者可利用该漏洞获取root访问权限。
Severity
高
VLAI Severity ?
Patch Name
Linux kernel本地提权漏洞（CNVD-2019-24795）的补丁
Patch Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。
Linux kernel 5.1.17之前版本中存在安全漏洞，该漏洞源于kernel/ptrace.c文件的ptrace_link未能正确处理对凭证的记录。攻击者可利用该漏洞获取root访问权限。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description
目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https： //security-tracker.debian.org/tracker/linux
Reference
https://www.exploit-db.com/exploits/47133
https://nvd.nist.gov/vuln/detail/CVE-2019-13272
Impacted products
| Name | Linux kernel <5.1.17 |
|---|
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CVE-2019-13272 (GCVE-0-2019-13272)
Vulnerability from cvelistv5
Published
2019-07-17 12:32
Modified
2025-10-21 23:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.
References
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"value": "In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit\u0027s pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "http://packetstormsecurity.com/files/153663/Linux-PTRACE_TRACEME-Broken-Permission-Object-Lifetime-Handling.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/153663/Linux-PTRACE_TRACEME-Broken-Permission-Object-Lifetime-Handling.html"
},
{
"name": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1903",
"refsource": "MISC",
"url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1903"
},
{
"name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17",
"refsource": "MISC",
"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17"
},
{
"name": "https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c41ee",
"refsource": "MISC",
"url": "https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c41ee"
},
{
"name": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6994eefb0053799d2e07cd140df6c2ea106c41ee",
"refsource": "MISC",
"url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6994eefb0053799d2e07cd140df6c2ea106c41ee"
},
{
"name": "https://bugzilla.suse.com/show_bug.cgi?id=1140671",
"refsource": "CONFIRM",
"url": "https://bugzilla.suse.com/show_bug.cgi?id=1140671"
},
{
"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1730895",
"refsource": "CONFIRM",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1730895"
},
{
"name": "FEDORA-2019-a95015e60f",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGRK5LYWBJ4E4SRI4DKX367NHYSI3VOH/"
},
{
"name": "DSA-4484",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2019/dsa-4484"
},
{
"name": "20190722 [SECURITY] [DSA 4484-1] linux security update",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Jul/30"
},
{
"name": "20190722 [slackware-security] Slackware 14.2 kernel (SSA:2019-202-01)",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Jul/33"
},
{
"name": "[debian-lts-announce] 20190723 [SECURITY] [DLA 1862-1] linux security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html"
},
{
"name": "[debian-lts-announce] 20190723 [SECURITY] [DLA 1863-1] linux-4.9 security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html"
},
{
"name": "http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20190806-0001/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20190806-0001/"
},
{
"name": "RHSA-2019:2405",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2019:2405"
},
{
"name": "RHSA-2019:2411",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2019:2411"
},
{
"name": "USN-4093-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4093-1/"
},
{
"name": "USN-4094-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4094-1/"
},
{
"name": "USN-4095-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4095-1/"
},
{
"name": "http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html"
},
{
"name": "https://support.f5.com/csp/article/K91025336",
"refsource": "CONFIRM",
"url": "https://support.f5.com/csp/article/K91025336"
},
{
"name": "USN-4117-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4117-1/"
},
{
"name": "USN-4118-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4118-1/"
},
{
"name": "RHSA-2019:2809",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2019:2809"
},
{
"name": "https://support.f5.com/csp/article/K91025336?utm_source=f5support\u0026amp;utm_medium=RSS",
"refsource": "CONFIRM",
"url": "https://support.f5.com/csp/article/K91025336?utm_source=f5support\u0026amp;utm_medium=RSS"
},
{
"name": "http://packetstormsecurity.com/files/154957/Linux-Polkit-pkexec-Helper-PTRACE_TRACEME-Local-Root.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/154957/Linux-Polkit-pkexec-Helper-PTRACE_TRACEME-Local-Root.html"
},
{
"name": "http://packetstormsecurity.com/files/156929/Linux-PTRACE_TRACEME-Local-Root.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/156929/Linux-PTRACE_TRACEME-Local-Root.html"
},
{
"name": "http://packetstormsecurity.com/files/165051/Linux-Kernel-5.1.x-PTRACE_TRACEME-pkexec-Local-Privilege-Escalation.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/165051/Linux-Kernel-5.1.x-PTRACE_TRACEME-pkexec-Local-Privilege-Escalation.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2019-13272",
"datePublished": "2019-07-17T12:32:55.000Z",
"dateReserved": "2019-07-04T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:45:33.569Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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