CVE-2017-17942

Exp

In LibTIFF 4.0.9, there is a heap-based buffer over-read in the function PackBitsEncode in tif_packbits.c.

Published: 2017-12-28 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-17942 is rated High Exploit Risk (70.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.37%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2017-17942

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2017-17942

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-08 0.55% 0.37% -0.18%
2 2025-10-26 0.51% 0.55% +0.04%
3 2025-10-06 — 0.51% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-17942

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2017-17942

OS Trackers for CVE-2017-17942

vendor priority summary link
debian unimportant CVE-2017-17942 unimportant priority: Debian including 1 source packages (tiff), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-17942
redhat low — https://access.redhat.com/security/cve/CVE-2017-17942
suse medium CVE-2017-17942 severity moderate: SUSE including 18 source package names (beta1:libtiff5-4.0.9-44.21.1, libtiff-devel-3.8.2-141.169.22.1, …), 54 product×package rows across 27 product lines (Container caasp/v4/nginx-ingress-controller, Image SLES12-SP5-Azure-SAP-BYOS, … (27 product lines)): Fixed 54. https://www.suse.com/security/cve/CVE-2017-17942/
ubuntu low CVE-2017-17942 low priority: Ubuntu including 1 source packages (tiff), 14 status rows across 14 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, trusty, upstream, xenial, zesty): not-affected 9, ignored 4, needed 1. https://ubuntu.com/security/CVE-2017-17942

Affected software / configurations for CVE-2017-17942

Vendor Product Version Raw CPE
libtiff libtiff 4.0.9 cpe:2.3:a:libtiff:libtiff:4.0.9:*:*:*:*:*:*:*

References for CVE-2017-17942

URL Tags
http://bugzilla.maptools.org/show_bug.cgi?id=2767 Exploit Issue Tracking Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/102312 Third Party Advisory VDB Entry
cvelogic Threat Intelligence