5.9

CVE-2021-31525: fedoraproject fedora Uncontrolled Recursion

Modified
AliasesSUSE-SU-2021:2082-1SUSE-SU-2021:2085-1UBUNTU-CVE-2021-31525
Published 27-05-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-31525 is a medium (CVSS 5.9) Uncontrolled Recursion vulnerability in fedoraproject fedora. EPSS estimates a 3.69% chance of exploitation in the next 30 days, higher than 89.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.9/10
010
Medium · v3.1 (NVD)
EPSS score
3.69%
0%100%
Low · 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 13 · Related 8
MGASA-2021-0369OPENSUSE-SU-2024:10808-1OPENSUSE-SU-2024:10809-1RHBA-2021:2979RHSA-2021:2704RHSA-2021:2984

Timeline

  1. 27-05-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

net/http in Go before 1.15.12 and 1.16.x before 1.16.4 allows remote attackers to cause a denial of service (panic) via a large header to ReadRequest or ReadResponse. Server, Transport, and Client can each be affected in some configurations.

CVSS metrics

8 scores · 7 sources · 2 versions

EPSS trend

Probability

3.69%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

No change 0.00 pp

From 3.69% 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.

Chainguard7 products
  • grpcurl< 1.8.7-r7
  • hey< 0.1.4-r3
  • k3d< 5.6.0-r11
  • k3d-proxy< 5.6.0-r11
  • k3d-tools< 5.6.0-r11
Wolfi6 products
  • grpcurl< 1.8.7-r7
  • hey< 0.1.4-r3
  • k3d< 5.6.0-r11
  • k3d-proxy< 5.6.0-r11
  • k3d-tools< 5.6.0-r11
Suse4 products
  • go1.15&distro=SUSE Linux Enterprise Module for Development Tools 15 SP2< 1.15.12-1.30.1
  • go1.15&distro=SUSE Linux Enterprise Module for Development Tools 15 SP3< 1.15.12-1.30.1
  • go1.16&distro=SUSE Linux Enterprise Module for Development Tools 15 SP2< 1.16.4-1.14.2
  • go1.16&distro=SUSE Linux Enterprise Module for Development Tools 15 SP3< 1.16.4-1.14.2
Ubuntu3 products
  • golang-1.16All versions (No fix recorded)
  • golang-golang-x-net-devAll versions (No fix recorded)
  • google-guest-agentAll versions (No fix recorded)
Alpine1 product
  • go≥ 1.16.0, < 1.15.12-r0 | ≥ 1.16.0, < 1.16.4-r0
Debian1 product
  • golang-golang-x-net< 1:0.0+git20210119.5f4716e+dfsg-3
Fedoraproject1 product
Go1 product
  • stdlib≥ 1.16.0-0, < 1.16.4
Golang1 product
  • go< 1.15.12 | ≥ 1.16.0, < 1.16.4
Golang.org/x1 product
  • net< 0.0.0-20210428140749-89ef3d95e781
Opensuse1 product
  • go1.15&distro=openSUSE Leap 15.2< 1.15.12-lp152.17.1

11 vendors · 27 products

References

22 links
Show all 22 references