7.7

CVE-2020-1711: debian debian_linux Heap-based Buffer Overflow

Modified
AliasesRHSA-2020:0669RHSA-2020:0731RHSA-2020:0773
Published 11-02-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-1711 is a high (CVSS 7.7) Heap-based Buffer Overflow vulnerability in debian debian_linux. EPSS estimates a 4.02% chance of exploitation in the next 30 days, higher than 90.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.7, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.7/10
010
High · v3.1 (CVE.org)
EPSS score
4.02%
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 19 · Related 11

Timeline

  1. 11-02-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU versions 2.12.0 before 4.2.1 handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

4.02%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

No change 0.00 pp

From 4.02% 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, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat194 products
  • enterprise_linuxEOL7.0 | 8.0
  • openstack10 | 13
  • hivex< 0:1.3.15-7.module+el8.1.1+5309+6d656f05 | < 0:1.3.15-7.module+el8.0.0+4084+cceb9f44
  • hivex-debuginfo< 0:1.3.15-7.module+el8.1.1+5309+6d656f05 | < 0:1.3.15-7.module+el8.0.0+4084+cceb9f44
  • hivex-debugsource< 0:1.3.15-7.module+el8.1.1+5309+6d656f05 | < 0:1.3.15-7.module+el8.0.0+4084+cceb9f44
Debian2 products
Opensuse1 product
Qemu1 product
  • qemu≥ 2.12.0, < 4.2.1
Red hat1 product
  • qemuAll qemu versions 2.12.0 before 4.2.1
Ubuntu1 product
  • qemu< 2.0.0+dfsg-2ubuntu1.47+esm6 | < 1:2.5+dfsg-5ubuntu10.43 | < 1:2.11+dfsg-1ubuntu7.23 | < 1:4.2-3ubuntu1

6 vendors · 200 products · Showing 200 of 244

References

28 links
Show all 28 references