CVE-2015-8970
CVSS V2 Medium 4.9
CVSS V3 Medium 5.5
Description
crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c.
Overview
- CVE ID
- CVE-2015-8970
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Modified
- Published Version
- 2016-11-28T03:59:02
- Last Modified Date
- 2023-02-13T00:55:21
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 1 | OR | 4.4.1 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:N/I:N/A:C
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 4.9
- Severity
- MEDIUM
- Exploitability Score
- 3.9
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 5.5
- Base Severity
- MEDIUM
- Exploitability Score
- 1.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd504589577d8e8e70f51f997ad487a4cb6c026f | Issue Tracking Patch Vendor Advisory |
| http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2 | Release Notes |
| http://www.openwall.com/lists/oss-security/2016/11/04/3 | Mailing List Third Party Advisory |
| http://www.securityfocus.com/bid/94217 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2017:1842 | |
| https://access.redhat.com/errata/RHSA-2017:2077 | |
| https://access.redhat.com/errata/RHSA-2017:2437 | |
| https://access.redhat.com/errata/RHSA-2017:2444 | |
| https://access.redhat.com/security/cve/CVE-2015-8970 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1386286 | Issue Tracking |
| https://github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026f | Issue Tracking Patch Third Party Advisory |
| https://groups.google.com/forum/#%21msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2015-8970 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8970 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 18:39:19 | Added to TrackCVE | |||
| 2022-12-02 12:12:12 | 2016-11-28T03:59Z | 2016-11-28T03:59:02 | CVE Published Date | updated |
| 2022-12-02 12:12:12 | 2018-08-13T21:47:54 | CVE Modified Date | updated | |
| 2022-12-02 12:12:12 | Modified | Vulnerability Status | updated | |
| 2023-02-02 23:05:45 | 2023-02-02T21:16:14 | CVE Modified Date | updated | |
| 2023-02-02 23:05:46 | crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c. | The lrw_crypt() function in 'crypto/lrw.c' in the Linux kernel before 4.5 allows local users to cause a system crash and a denial of service by the NULL pointer dereference via accept(2) system call for AF_ALG socket without calling setkey() first to set a cipher key. | Description | updated |
| 2023-02-02 23:05:47 | References | updated | ||
| 2023-02-13 01:06:48 | 2023-02-13T00:55:21 | CVE Modified Date | updated | |
| 2023-02-13 01:06:48 | The lrw_crypt() function in 'crypto/lrw.c' in the Linux kernel before 4.5 allows local users to cause a system crash and a denial of service by the NULL pointer dereference via accept(2) system call for AF_ALG socket without calling setkey() first to set a cipher key. | crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c. | Description | updated |