Fedora EPEL 6 update for dropbear



| Updated: 2025-04-24
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2017-9078
CVE-2017-9079
CWE-ID CWE-415
CWE-200
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Fedora
Operating systems & Components / Operating system

dropbear
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Double Free

EUVDB-ID: #VU14820

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-9078

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a double free in cleanup of TCP listeners when the -a option is enabled. The vulnerability allows a remote authenticated attacker to trigger double free error and execute arbitrary code on the target system with root privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 6.0

dropbear: before 2017.75-1.el6

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2017-35530e38d5


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.

2) Information disclosure

EUVDB-ID: #VU14821

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-9079

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to the application allows usage of symlinks when configured with authorized_keys file format and a command= option. A local user can read certain files on the system with root privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 6.0

dropbear: before 2017.75-1.el6

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2017-35530e38d5


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.



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