Target from: CVE Network
Intermediate, Rootable
CVE-2020-7247 / 0.0.0.0
4: Flags (2:system, env, root)
1: Service
3,600 pts
Level 14 / CTFer
0xpwn1x / 152nd Place
4: Flags found
1: Service discovered
3,600 pts
12 minutes
This is a target running a vulnerable OpenSMTPD instance of CVE-2020-7247.
Description
A vulnerability discovered in OpenSMTPD, OpenBSD's mail server was exploitable since May 2018 (commit a8e222352f, "switch smtpd to new grammar") and allows an attacker to execute arbitrary shell commands, as root
Environment details
The system is accessible at 10.0.100.33 and runs OpenSMTPD on Debian Buster on the default port (25/tcp).
Flags can be found at the usual places:
/root/etc/passwdgecos/etc/shadowpassword hashenvvariable
References
67 Headshots (newer first)
0nyx, 0xpwn1x, NekoX7, n3thacker, be444, JuanPablo23ag, XNOEX, cavca2012, Astralis, Ckabos, canary, Praise, Caritattriste, c0nfirm, alisa, hackercon101, D4rkZone, michyamrane, snipeXZmokrates, darklordbnl, falconsec, 44756D6D506C61796572, BlackAnon, luismtzsilva, ks4v3r, Winsad, L0v3, jaxafed, dogolinho, antonioban, noother, markuche, Twelve, 0xRaef, M4sk0ff, Grosik, 0x1337, sirEgghead, JDgodd, ElleuchX1, Muzec, wonderchild, R4V3N, hacker, g0rchy, jinake, biba22, Pegasus, rootzActivity Stream
Latest activity on the platform
0xpwn1x Gained access to data stored in environmental variables from CVE-2020-7247 for 700 points, 2 months ago 0xpwn1x Discovered the ETSCTF username gecos flag under the /etc/passwd file from CVE-2020-7247 for 800 points, 2 months ago 0xpwn1x Discovered the ETSCTF username flag under the /etc/shadow file from CVE-2020-7247 for 1000 points, 2 months ago