CVE-2020-1711: debian debian_linux Heap-based Buffer Overflow
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.
Not severe (CVSS 7.7, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 19 · Related 11Timeline
- 11-02-2020PublishedVulnerability first disclosed.
- 04-08-2024Last 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- OSV · Red hatEcosystem advisory · calculated6.0MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated6.0MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:LDiffers
- OSV · DebianEcosystem advisory · calculated6.0MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:LDiffers
- NVDNIST6.0MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:LDiffers
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
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
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
- qemu< 1:4.2-2
- debian_linuxEOL8.0 | 9.0
Opensuse1 product
- leapEOL15.1
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- bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1711X Refsource CONFIRMIssue TrackingPatchThird Party Advisory
- lists.gnu.org/archive/html/qemu-devel/2020-01/msg05535.htmlX Refsource MISCMailing ListPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2020/01/23/3X Refsource MISCARTICLEREPORTMailing ListThird Party Advisory
- access.redhat.com/errata/RHSA-2020:0669Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- access.redhat.com/errata/RHSA-2020:0773Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- access.redhat.com/errata/RHSA-2020:0731Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/03/msg00017.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
Show all 28 references
- lists.debian.org/debian-lts-announce/2020/09/msg00013.htmlMailing ListX Refsource MLISTThird Party Advisory