CVE-2018-1000888 is a critical PHP object injection vulnerability affecting PEAR Archive_Tar versions 1.4.3 and earlier, impacting various Linux distributions including Canonical and Debian. Attackers can craft malicious tar files containing "phar://" streams to trigger PHP object unserialization, leading to arbitrary file deletion and potentially remote code execution. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over the network with low attack complexity, requiring user interaction. While not currently in CISA's KEV catalog, public exploit code exists on ExploitDB, and it has garnered significant community discussion and media coverage, indicating a high potential for exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.4.3CPE matchmatch criteria | cpe:2.3:a:php:pear_archive_tar:*:*:*:*:*:*:*:* | ||
16.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | ||
18.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | ||
18.10CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.