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CVE-2017-18199

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial...

6.5 MediumFix available

CVE-2017-18199 is a medium vulnerability (CVSS 6.5) in Gnu Libcdio, published February 24, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.26%, the 88th percentile. Fixed in libcdio 1.0.0-1.

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

3.26%Up 1.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.5

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Record
CVE-2017-18199
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-476
Updated
2026-11-02
CVE List No score

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Record
CVE-2017-18199
Updated
2026-11-02
EUVDEUVD-2017-9332 No score

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Record
EUVD-2017-9332
Updated
2026-11-03
GitHub AdvisoriesGHSA-g22c-3rrr-vfp7 6.5

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial...

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Record
GHSA-g22c-3rrr-vfp7
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
OSV 6.5

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Record
CVE-2017-18199
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2017-18199 6.5

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Record
DEBIAN-CVE-2017-18199
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 9 moreShow less
OSVRHSA-2018:3246 3.9

Red Hat Security Advisory: libcdio security update

Record
RHSA-2018:3246
CVSS 3.0
3.9 LowCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2017-18199 6.5

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Record
UBUNTU-CVE-2017-18199
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2018-0209 No score

Updated libcdio packages fix security vulnerabilities

A heap corruption bug was found in the way libcdio handled processing of ISO files. An attacker could potentially use this flaw to crash applications using libcdio by tricking them into processing crafted ISO files, thus resulting in local DoS (CVE-2017-18198).

A NULL pointer dereference flaw was found in the way libcdio handled processing of ISO files. An attacker could potentially use this flaw to crash applications using libcdio by tricking them into processing crafted ISO files (CVE-2017-18199).

A double-free flaw was found in the way libcdio handled processing of ISO files. An attacker could potentially use this flaw to crash applications using libcdio by tricking them into processing crafted ISO files (CVE-2017-18201).

Record
MGASA-2018-0209
Updated
2026-11-02
OSVMGASA-2018-0225 No score

Updated libcdio packages fix security vulnerabilities

A heap corruption bug was found in the way libcdio handled processing of ISO files. An attacker could potentially use this flaw to crash applications using libcdio by tricking them into processing crafted ISO files, thus resulting in local DoS (CVE-2017-18198).

A NULL pointer dereference flaw was found in the way libcdio handled processing of ISO files. An attacker could potentially use this flaw to crash applications using libcdio by tricking them into processing crafted ISO files (CVE-2017-18199).

A double-free flaw was found in the way libcdio handled processing of ISO files. An attacker could potentially use this flaw to crash applications using libcdio by tricking them into processing crafted ISO files (CVE-2017-18201).

Record
MGASA-2018-0225
Updated
2026-11-02
OSVopenSUSE-SU-2024:10675-1 No score

libcdio++0-2.1.0-2.6 on GA media

These are all security issues fixed in the libcdio++0-2.1.0-2.6 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10675-1
Updated
2026-11-02
OSVSUSE-SU-2018:2236-1 No score

Security update for libcdio

This update for libcdio fixes the following issues:

The following security vulnerabilities were addressed:

  • CVE-2017-18199: Fixed a NULL pointer dereference in realloc_symlink in rock.c (bsc#1082821)
  • CVE-2017-18201: Fixed a double free vulnerability in get_cdtext_generic() in _cdio_generic.c (bsc#1082877)
  • Fixed several memory leaks (bsc#1082821)
Record
SUSE-SU-2018:2236-1
Updated
2026-11-02
OSVSUSE-SU-2020:14498-1 No score

Security update for libcdio

This update for libcdio and libcdio-mini fixes the following issues:

Security issue fixed:

  • CVE-2017-18199: Fixed a NULL Pointer Dereference in realloc_symlink which could allow remote attackers to cause Denial of Service (bsc#1082821).
Record
SUSE-SU-2020:14498-1
Updated
2026-11-02
OSVSUSE-SU-2020:3023-1 No score

Security update for libcdio

This update for libcdio fixes the following issues:

The following security vulnerability was addressed:

  • CVE-2017-18199: Fixed a NULL pointer dereference in realloc_symlink in rock.c, which allowed remote attackers to cause a denial of service via a crafted ISO file. (bsc#1082821)
Record
SUSE-SU-2020:3023-1
Updated
2026-11-02
OSVUSN-5558-1 No score

libcdio vulnerabilities

Zhao Liang discovered that libcdio was not properly performing memory management operations when processing ISO files, which could result in a heap buffer overflow or in a NULL pointer dereference. If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. (CVE-2017-18198, CVE-2017-18199)

Record
USN-5558-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libcdio
Debian:12
 before 1.0.0-1
1.0.0-1
libcdio
Debian:13
 before 1.0.0-1
1.0.0-1
libcdio
Debian:14
 before 1.0.0-1
1.0.0-1
libcdio
Mageia:6
 before 0.94-1.1.mga6
0.94-1.1.mga6
libcdio
Mageia:5
 before 0.92-3.1.mga5
0.92-3.1.mga5
libcdio
Red Hat:enterprise_linux:7::client
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio-debuginfo
Red Hat:enterprise_linux:7::client
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio-devel
Red Hat:enterprise_linux:7::client
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio
Red Hat:enterprise_linux:7::computenode
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio-debuginfo
Red Hat:enterprise_linux:7::computenode
 before 0:0.92-3.el7
0:0.92-3.el7
Show 15 moreShow less
Affected packages
PackageAffectedFixed
libcdio-devel
Red Hat:enterprise_linux:7::computenode
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio
Red Hat:enterprise_linux:7::server
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio-debuginfo
Red Hat:enterprise_linux:7::server
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio-devel
Red Hat:enterprise_linux:7::server
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio
Red Hat:enterprise_linux:7::workstation
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio-debuginfo
Red Hat:enterprise_linux:7::workstation
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio-devel
Red Hat:enterprise_linux:7::workstation
 before 0:0.92-3.el7
0:0.92-3.el7
libcdio
SUSE:Linux Enterprise Module for Desktop Applications 15
 before 0.94-6.3.1
0.94-6.3.1
libcdio
SUSE:Linux Enterprise Point of Sale 11 SP3
 before 0.80-8.3.5
0.80-8.3.5
libcdio
SUSE:Linux Enterprise Software Development Kit 12 SP5
 before 0.90-6.6.5
0.90-6.6.5
libcdio
SUSE:Linux Enterprise Server 12 SP5
 before 0.90-6.6.5
0.90-6.6.5
libcdio
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
 before 0.90-6.6.5
0.90-6.6.5
libcdio
SUSE:Linux Enterprise Workstation Extension 12 SP5
 before 0.90-6.6.5
0.90-6.6.5
libcdio
Ubuntu:Pro:14.04:LTS
 before 0.83-4.1ubuntu1+esm1, plus listed versions
0.83-4ubuntu10.83-4.10.83-4.1ubuntu1
0.83-4.1ubuntu1+esm1
libcdio
Ubuntu:Pro:16.04:LTS
 before 0.83-4.2ubuntu1+esm1, plus listed versions
0.83-4.20.83-4.2ubuntu1
0.83-4.2ubuntu1+esm1

History

History
WhenChangedSources
2026-11-03aliasesEUVD
2026-11-02createdCVE List, GitHub Advisories, NVD, OSV

References

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