Risk | Low |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2018-18521 CVE-2018-18520 |
CWE-ID | CWE-369 CWE-476 |
Exploitation vector | Network |
Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. |
Vulnerable software Subscribe |
elfutils Server applications / File servers (FTP/HTTP) |
Vendor | Sourceware |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU15527
Risk: Low
CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-18521
CWE-ID:
CWE-369 - Divide By Zero
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to due to improper handling of Executable and Linkable Format (ELF) files by the arlib_add_symbols function, as defined in the arlib.c source code file. A remote attacker can trick the victim into opening a specially crafted ELF file that submits malicious input, trigger a divide-by-zero condition and cause application to crash.
MitigationInstall updates from vendor's website.
Vulnerable software versionselfutils: 0.174
External linkshttp://sourceware.org/bugzilla/show_bug.cgi?id=23786
http://sourceware.org/ml/elfutils-devel/2018-q4/msg00055.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
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.
EUVDB-ID: #VU15528
Risk: Low
CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-18520
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to due to improper handling of Executable and Linkable Format (ELF) files by the elf_end function, as defined in the size.c source code file. A remote attacker can trick the victim into opening a specially crafted ELF file that submits malicious input, trigger NULL pointer dereference and cause application to crash.
MitigationInstall updates from vendor's website.
Vulnerable software versionselfutils: 0.133 - 0.174
External linkshttp://sourceware.org/bugzilla/show_bug.cgi?id=23787
http://sourceware.org/ml/elfutils-devel/2018-q4/msg00057.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
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.