Vulnerability Details : CVE-2018-20820
Potential exploit
read_ujpg in jpgcoder.cc in Dropbox Lepton 1.2.1 allows attackers to cause a denial-of-service (application runtime crash because of an integer overflow) via a crafted file.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2018-20820
- cpe:2.3:a:dropbox:lepton:1.2.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-20820
0.17%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 34 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-20820
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2018-20820
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-20820
-
https://github.com/dropbox/lepton/commit/6a5ceefac1162783fffd9506a3de39c85c725761
fix #111 · dropbox/lepton@6a5ceef · GitHubPatch;Third Party Advisory
-
https://github.com/dropbox/lepton/issues/111
Integer Overflow at src/lepton/jpgcoder.cc:4160 · Issue #111 · dropbox/lepton · GitHubExploit;Patch;Third Party Advisory
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