5.3

CVE-2021-28169: debian debian_linux

Modified
AliasesUBUNTU-CVE-2021-28169DEBIAN-CVE-2021-28169DLA-2688-1
Published 09-06-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-28169 is a medium (CVSS 5.3) vulnerability in debian debian_linux. EPSS estimates a 78.48% chance of exploitation in the next 30 days, higher than 99.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
78.48%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 2
DSA-4949-1OPENSUSE-SU-2021:2005-1RHSA-2021:3758SUSE-SU-2021:2005-1

Timeline

  1. 09-06-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory. For example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.

CVSS metrics

7 scores · 6 sources · 2 versions

EPSS trend

Probability

78.48%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

No change 0.00 pp

From 78.48% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Netapp4 products
Chainguard3 products
  • hadoop-fips-3.3.6All versions (No fix recorded)
  • hadoop-fips-3.4.2All versions (No fix recorded)
  • hadoop-fips-3.5All versions (No fix recorded)
Ubuntu3 products
  • jettyAll versions (No fix recorded)
  • jetty8All versions (No fix recorded)
  • jetty9All versions (No fix recorded)
Debian2 products
  • jetty9< 9.2.30-0+deb9u2 | < 9.4.39-2
  • debian_linuxEOL9.0 | 10.0
Oracle2 products
Eclipse1 product
  • jetty< 9.4.41 | ≥ 10.0.0, < 10.0.3 | ≥ 11.0.0, < 11.0.3
Org.eclipse.jetty1 product
  • jetty-servlets< 9.4.41 | ≥ 10.0.0, < 10.0.3 | ≥ 11.0.0, < 11.0.3
The eclipse foundation1 product
  • eclipse jetty≥ unspecified, ≤ 9.4.40 | ≥ unspecified, ≤ 10.0.2 | ≥ unspecified, ≤ 11.0.2

8 vendors · 17 products

References

47 links
Show all 47 references