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CVE-2017-5503

20
FAUCET Score

CVE-2017-5503 is a denial-of-service vulnerability affecting JasPer 1.900.27, specifically within the dec_clnpass function in libjasper/jpc/jpc_t1dec.c. An attacker can trigger an invalid memory write and crash by providing a crafted image, leading to a denial of service. With a CVSS score of 5.5 (Medium), this vulnerability requires user interaction (UI:R) and local access (AV:L), but could result in high availability impact (A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.900.27CPE matchmatch criteria
cpe:2.3:a:jasper_project:jasper:1.900.27:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.76%
Probability of exploitation in next 30 days
EPSS Percentile
75.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0176 is in the 86th percentile among its peer group of 5,760 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: jasper

Vendor Advisories (1)

redhatCVE-2017-5503Moderate

jasper: invalid memory write in dec_clnpass()

Nov 20, 2016

References

lists.opensuse.org / opensuse-security-announce/2020-09/msg00082.html
lists.opensuse.org / opensuse-security-announce/2020-09/msg00085.html
blogs.gentoo.org / ago/2017/01/16/jasper-invalid-memory-write-in-dec_clnpass-jpc_t1dec-c
ExploitThird Party Advisory
security.gentoo.org / glsa/201908-03
openwall.com / lists/oss-security/2017/01/16/3
ExploitMailing List
openwall.com / lists/oss-security/2017/01/17/10
Mailing List
securityfocus.com / bid/95683