CVE-2018-18520
Published: 19 October 2018
An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
elfutils Launchpad, Ubuntu, Debian |
trusty |
Released
(0.158-0ubuntu5.3+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| bionic |
Released
(0.170-0.4ubuntu0.1)
|
|
| cosmic |
Released
(0.170-0.5.0ubuntu1.1)
|
|
| disco |
Not vulnerable
(0.176-1)
|
|
| eoan |
Not vulnerable
(0.176-1.1)
|
|
| focal |
Not vulnerable
(0.176-1.1)
|
|
| groovy |
Not vulnerable
(0.176-1.1)
|
|
| hirsute |
Not vulnerable
(0.176-1.1)
|
|
| impish |
Not vulnerable
(0.176-1.1)
|
|
| jammy |
Not vulnerable
(0.176-1.1)
|
|
| kinetic |
Not vulnerable
(0.176-1.1)
|
|
| lunar |
Not vulnerable
(0.176-1.1)
|
|
| upstream |
Released
(0.175-1)
|
|
| xenial |
Released
(0.165-3ubuntu1.2)
|
|
|
Patches: upstream: https://sourceware.org/git/?p=elfutils.git;a=commit;h=22d2d082d57a7470fadc0eae67179553f4919209 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |