cbcvebase.
CVE-2018-5262
published 2018-01-12

CVE-2018-5262: A stack-based buffer overflow in Flexense DiskBoss 8.8.16 and earlier allows unauthenticated remote attackers to execute arbitrary code in the context of a…

PriorityP275critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
EXPLOIT
EPSS
36.18%
98.5th percentile
A stack-based buffer overflow in Flexense DiskBoss 8.8.16 and earlier allows unauthenticated remote attackers to execute arbitrary code in the context of a highly privileged account.

Affected

21 ranges
VendorProductVersion rangeFixed in
flexensediskboss<= 8.8.16—
jenkinsazure_slave_plugin——
jenkinsazure_vm_agents_plugin——
jenkinscoverity_plugin——
jenkinscppncss_plugin——
jenkinscredentials_plugin——
jenkinsenvinject_plugin——
jenkinsenvironment_injector_plugin——
jenkinsgerrit_trigger_plugin——
jenkinsgit_plugin——
jenkinsgoogle_play_android_publisher_plugin——
jenkinsids_in_google_play_android_publisher_plugin——
jenkinsimproper_access_control_in_gerrit_trigger_plugin——
jenkinsjob_and_node_ownership_plugin——
jenkinsmercurial_plugin——
jenkinstestlink_plugin——
jenkinsurl_in_git_plugin——
jenkinsurl_in_mercurial_plugin——
jenkinsurl_in_subversion_plugin——
jenkinsyou_have_ever_used_environment_injector_plugin——
pykmip_projectpykmip>= 0 < 0.8.00.8.0

Detection & IOCsextracted from sources · hover to see the quote

port8094↗
port8096↗
port8097↗
port8098↗
urlhttp://www.diskboss.com/setups/diskbossent_setup_v8.8.16.exe↗
bytes↗
\x75\x19\xba\xab\x03\x00\x00\x00\x00\x40\x00\x00
bytes↗
\xEB\x06\x90\x90
bytes↗
\xe9\x3f\xfb\xff\xff
  • →Monitor for unauthenticated TCP connections to DiskBoss listener ports 8094, 8096, 8097, 8098 containing the 4-byte magic header \x75\x19\xba\xab followed by \x03\x00\x00\x00\x00\x40\x00\x00 — this is the exploit message framing. ↗
  • →Detect the JMP short + NOP sled preret sequence (\xEB\x06\x90\x90) within the payload body on DiskBoss ports as an indicator of ROP/stack-pivot exploitation. ↗
  • →Detect the backward JMP pivot stub (\xe9\x3f\xfb\xff\xff) within network payloads targeting DiskBoss ports; this is used to redirect execution into the shellcode NOP sled. ↗
  • →The exploit sends a payload of ~1000 bytes with a fixed offset of 128 bytes before the return address overwrite; anomalously large single-packet messages to DiskBoss ports (~1000+ bytes) from unauthenticated sources should be flagged. ↗
  • →The embedded shellcode is a Shikata Ga Nai encoded windows/shell_reverse_tcp payload; scan network traffic on DiskBoss ports for the Shikata Ga Nai decoder stub pattern. ↗
  • ·The exploit was tested on Windows 7 SP1 x64 and Windows XP SP3 x86; ASLR/DEP status of the target affects reliability and gadget addresses. ↗

CVSS provenance

nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
ghsa4.3MEDIUM
vendor_redhat4.3MEDIUM
CVEs like this are exactly what “Exploited This Week” covers.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.