CVE-2018-16402 - Double Free

Severity

75%

Complexity

99%

Confidentiality

106%

libelf/elf_end.c in elfutils 0.173 allows remote attackers to cause a denial of service (double free and application crash) or possibly have unspecified other impact because it tries to decompress twice.

libelf/elf_end.c in elfutils 0.173 allows remote attackers to cause a denial of service (double free and application crash) or possibly have unspecified other impact because it tries to decompress twice.

CVSS 3.0 Base Score 9.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P).

Demo Examples

Double Free

CWE-415

Double Free

CWE-415

While contrived, this code should be exploitable on Linux distributions which do not ship with heap-chunk check summing turned on.


               
}
free(buf1R2);

Overview

First reported 6 years ago

2018-09-03 19:29:00

Last updated 5 years ago

2019-06-10 17:29:00

Affected Software

elfutils project elfutils 0.173

0.173

References

openSUSE-SU-2019:1590

RHSA-2019:2197

https://sourceware.org/bugzilla/show_bug.cgi?id=23528

Exploit, Issue Tracking, Third Party Advisory

USN-4012-1

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