Multiple vulnerabilities in libdwarf

Published: 2017-01-31 | Updated: 2020-08-08

Risk	Medium
Patch available	NO
Number of vulnerabilities	2
CVE-ID	CVE-2015-8750 CVE-2016-2050
CWE-ID	CWE-476 CWE-787
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	libdwarf Universal components / Libraries / Libraries used by multiple products
Vendor	David Anderson

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU39661

Risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-8750

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a debug_abbrev section marked NOBITS in an ELF file.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

libdwarf: 20151114

CPE2.3

cpe:2.3:a:davea42:libdwarf:20151114:*:*:*:*:*:*:*

External links

https://www.openwall.com/lists/oss-security/2016/01/07/11
https://bugzilla.redhat.com/show_bug.cgi?id=1294264
https://github.com/tomhughes/libdwarf/commit/11750a2838e52953013e3114ef27b3c7b1780697

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) Out-of-bounds write

EUVDB-ID: #VU39761

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-2050

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The get_abbrev_array_info function in libdwarf-20151114 allows remote attackers to cause a denial of service (out-of-bounds write) via a crafted elf file.