Debian update for perl
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2018-18311 CVE-2018-18312 CVE-2018-18313 CVE-2018-18314 |
| CWE-ID | CWE-190 CWE-122 CWE-787 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #3 is available. Public exploit code for vulnerability #4 is available. |
| Vulnerable software |
Debian Linux Operating systems & Components / Operating system |
| Vendor | Debian |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Integer overflow
EUVDB-ID: #VU16183
Risk: High
CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2018-18311
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in Perl_my_setenv when processing malicious input. A remote unauthenticated attacker can supply specially crafted data, trigger heap-based buffer overflow and cause the service to crash or execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected package to version: 5.24.1-3+deb9u5
Vulnerable software versionsDebian Linux: All versions
CPE2.3 External linkshttp://www.debian.org/security/2018/dsa-4347
Q & 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. However, proof of concept for this vulnerability is available.
2) Out-of-bounds write
EUVDB-ID: #VU16184
Risk: High
CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2018-18312
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The vulnerability exists due to heap-based buffer overflow write during compilation. A remote unauthenticated attacker can supply specially crafted regular expression, trigger memory corruption and cause the service to crash or execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected package to version: 5.24.1-3+deb9u5
Vulnerable software versionsDebian Linux: All versions
CPE2.3 External linkshttp://www.debian.org/security/2018/dsa-4347
Q & 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. However, proof of concept for this vulnerability is available.
3) Heap-based buffer overflow
EUVDB-ID: #VU16186
Risk: Low
CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2018-18313
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to heap-based buffer overflow read during compilation. A remote unauthenticated attacker can supply specially crafted regular expression, trigger memory leak and gain access to arbitrary data.
MitigationUpdate the affected package to version: 5.24.1-3+deb9u5
Vulnerable software versionsDebian Linux: All versions
CPE2.3 External linkshttp://www.debian.org/security/2018/dsa-4347
Q & 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. However, proof of concept for this vulnerability is available.
4) Heap-based buffer overflow
EUVDB-ID: #VU16185
Risk: High
CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2018-18314
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The vulnerability exists due to heap-based buffer overflow when processing malicious input. A remote unauthenticated attacker can supply specially crafted regular expression, trigger memory corruption and cause the service to crash or execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected package to version: 5.24.1-3+deb9u5
Vulnerable software versionsDebian Linux: All versions
CPE2.3 External linkshttp://www.debian.org/security/2018/dsa-4347
Q & 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. However, proof of concept for this vulnerability is available.
