Slackware Linux update for ruby
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 6 |
| CVE-ID | CVE-2017-17742 CVE-2018-6914 CVE-2018-8777 CVE-2018-8778 CVE-2018-8779 CVE-2018-8780 |
| CWE-ID | CWE-113 CWE-22 CWE-400 CWE-200 CWE-626 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Slackware Linux Operating systems & Components / Operating system |
| Vendor | Slackware |
Security Bulletin
This security bulletin contains information about 6 vulnerabilities.
1) HTTP response splitting
EUVDB-ID: #VU11537
Risk: Low
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2017-17742
CWE-ID:
CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform HTTP response splitting attack.
The weakness exists due to improper handling of HTTP requests. If a script accepts an external input and outputs it without modification as a part of HTTP responses, a remote attacker can use newline characters to trick the victim that the HTTP response header is stopped at there and inject fake HTTP responses after the newline characters to show malicious contents to the victim.
Update the affected package ruby.
Vulnerable software versionsSlackware Linux: 14.2
CPE2.3 External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Path traversal
EUVDB-ID: #VU11538
Risk: Low
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-6914
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to write arbitrary files on the target system.
The weakness exists in the Dir.mktmpdir method in the tmpdir library due to path traversal. A remote attacker can create a directory or a file at any directory in the prefix argument.
Update the affected package ruby.
Vulnerable software versionsSlackware Linux: 14.2
CPE2.3 External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Resource exhaustion
EUVDB-ID: #VU11539
Risk: Low
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-8777
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists a large request in WEBrick. A remote attacker can send a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause the service to crash.
Update the affected package ruby.
Vulnerable software versionsSlackware Linux: 14.2
CPE2.3 External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Buffer under-read
EUVDB-ID: #VU11540
Risk: Low
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-8778
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists in the String#unpack method due to buffer under-read. A remote attacker can gain access to potentially sensitive information.
Update the affected package ruby.
Vulnerable software versionsSlackware Linux: 14.2
CPE2.3 External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
5) Poison null byte
EUVDB-ID: #VU11541
Risk: Low
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-8779
CWE-ID:
CWE-626 - Null Byte Interaction Error (Poison Null Byte)
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to write arbitrary files on the target system.
The weakness exists in the UNIXServer.open and UNIXSocket.open methods due to improper checking of null characters. A remote attacker can accept the socket file in the unintentional path.
Update the affected package ruby.
Vulnerable software versionsSlackware Linux: 14.2
CPE2.3 External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
6) Path traversal
EUVDB-ID: #VU11542
Risk: Low
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-8780
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information and write arbitrary files on the target system.
The weakness exists in the Dir.open, Dir.new, Dir.entries and Dir.empty? methods due to improper checking of NULL characters. A remote attacker can trigger the unintentional directory traversal.
Update the affected package ruby.
Vulnerable software versionsSlackware Linux: 14.2
CPE2.3 External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
