Fedora 24 update for kernel
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2017-7308 CVE-2017-7618 CVE-2017-7616 |
| CWE-ID | CWE-787 CWE-264 CWE-388 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software |
Fedora Operating systems & Components / Operating system kernel Operating systems & Components / Operating system package or component |
| Vendor | Fedoraproject |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Heap-out-of-bounds write
EUVDB-ID: #VU6526
Risk: Low
CVSSv4.0: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]
CVE-ID: CVE-2017-7308
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: Yes
DescriptionThe vulnerability allows a local attacker to cause DoS conditions.
The weakness exists due to improper validation of certain block-size data by the packet_set_ring function in net/packet/af_packet.c. A local attacker can provide specific parameters to the PACKET_RX_RING option on an AF_PACKET socket with a TPACKET_V3 ring buffer version enabled, trigger heap-out-of-bounds write and cause denial of service.
Successful exploitation of the vulnerability results in denial of service.
Install updates from vendor's repository.
Vulnerable software versionsFedora: 24
kernel: before 4.10.10-100.fc24
CPE2.3 External linkshttps://bodhi.fedoraproject.org/updates/FEDORA-2017-8e7549fb91
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.
2) Denial of service
EUVDB-ID: #VU7665
Risk: Low
CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2017-7618
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to an API operation calling its own callback flaw in crypto/ahash.c. A local attacker can trigger EBUSY on a full queue and cause an infinite recursion on the system.
Successful exploitation of the vulnerability results in denial of service.
Install updates from vendor's repository.
Vulnerable software versionsFedora: 24
kernel: before 4.10.10-100.fc24
CPE2.3 External linkshttps://bodhi.fedoraproject.org/updates/FEDORA-2017-8e7549fb91
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Information disclosure
EUVDB-ID: #VU6613
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2017-7616
CWE-ID:
CWE-388 - Error Handling
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to obtain potentially sensitive information from system memory
The weakness exists due to an error handling flaw in the set_mempolicy() and mbind compat() system calls in 'mm/mempolicy.c'. A local attacker can trigger a failure of a certain bitmap operation and obtain sensitive information from uninitialized stack data.
Successful exploitation of the vulnerability results in information disclosure.
Install updates from vendor's repository.
Vulnerable software versionsFedora: 24
kernel: before 4.10.10-100.fc24
CPE2.3 External linkshttps://bodhi.fedoraproject.org/updates/FEDORA-2017-8e7549fb91
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
