Every CVE Search/ Get API key

CVE-2018-7323

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop...

7.5 HighFix available

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

2.46%Up 0.8 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Record
CVE-2018-7323
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-834
Updated
2026-11-02
CVE List No score

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Record
CVE-2018-7323
Updated
2026-11-02
EUVDEUVD-2018-19055 No score

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Record
EUVD-2018-19055
Updated
2026-11-03
GitHub AdvisoriesGHSA-c923-fp9v-wc2x 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop...

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Record
GHSA-c923-fp9v-wc2x
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-834
Updated
2026-11-02
OSVALPINE-CVE-2018-7323 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Record
ALPINE-CVE-2018-7323
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
OSV 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Record
CVE-2018-7323
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 5 moreShow less
OSVDEBIAN-CVE-2018-7323 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Record
DEBIAN-CVE-2018-7323
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-7323 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Record
UBUNTU-CVE-2018-7323
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2018-0151 No score

Updated wireshark packages fix security vulnerabilities

The SIGCOMP dissector could crash (CVE-2018-7320).

Multiple dissectors could go into large infinite loops. All ASN.1 BER dissectors, along with the DICOM, DMP, LLTD, OpenFlow, RELOAD, RPCoRDMA, RPKI-Router, S7COMM, SCCP, Thread, Thrift, USB, and WCCP dissectors were susceptible (CVE-2018-7321,CVE-2018-7322, CVE-2018-7323, CVE-2018-7324, CVE-2018-7325, CVE-2018-7326, CVE-2018-7327, CVE-2018-7328, CVE-2018-7329, CVE-2018-7330, CVE-2018-7331, CVE-2018-7332, CVE-2018-7333).

The UMTS MAC dissector could crash (CVE-2018-7334).

The IEEE 802.11 dissector could crash (CVE-2018-7335)

The FCP dissector could crash (CVE-2018-7336).

The IPMI dissector could crash (CVE-2018-7417).

The SIGCOMP dissector could crash (CVE-2018-7418).

The NBAP disssector could crash (CVE-2018-7419).

The pcapng file parser could crash (CVE-2018-7420).

The LWAPP dissector could crash (CVE-2018-9256).

The MP4 dissector could crash (CVE-2018-9259).

The IEEE 802.15.4 dissector could crash (CVE-2018-9260).

The NBAP dissector could crash (CVE-2018-9261).

The VLAN dissector could crash (CVE-2018-9262).

The Kerberos dissector could crash (CVE-2018-9263).

The ADB dissector could crash (CVE-2018-9264).

Memory leaks in multiple dissectors (CVE-2018-9265, CVE-2018-9266, CVE-2018-9267, CVE-2018-9268, CVE-2018-9269, CVE-2018-9270, CVE-2018-9271, CVE-2018-9272, CVE-2018-9273, CVE-2018-9274).

Record
MGASA-2018-0151
Updated
2026-11-02
OSVSUSE-SU-2018:0811-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Security issue fixed (bsc#1082692):

  • CVE-2018-7335: The IEEE 802.11 dissector could crash (wnpa-sec-2018-05)
  • CVE-2018-7321: thrift long dissector loop (dissect_thrift_map)
  • CVE-2018-7322: DICOM: inifinite loop (dissect_dcm_tag)
  • CVE-2018-7323: WCCP: very long loop (dissect_wccp2_alternate_mask_value_set_element)
  • CVE-2018-7324: SCCP: infinite loop (dissect_sccp_optional_parameters)
  • CVE-2018-7325: RPKI-Router Protocol: infinite loop (dissect_rpkirtr_pdu)
  • CVE-2018-7326: LLTD: infinite loop (dissect_lltd_tlv)
  • CVE-2018-7327: openflow_v6: infinite loop (dissect_openflow_bundle_control_v6)
  • CVE-2018-7328: USB-DARWIN: long loop (dissect_darwin_usb_iso_transfer)
  • CVE-2018-7329: S7COMM: infinite loop (s7comm_decode_ud_cpu_alarm_main)
  • CVE-2018-7330: thread_meshcop: infinite loop (get_chancount)
  • CVE-2018-7331: GTP: infinite loop (dissect_gprscdr_GGSNPDPRecord, dissect_ber_set)
  • CVE-2018-7332: RELOAD: infinite loop (dissect_statans)
  • CVE-2018-7333: RPCoRDMA: infinite loop in get_write_list_chunk_count
  • CVE-2018-7421: Multiple dissectors could go into large infinite loops (wnpa-sec-2018-06)
  • CVE-2018-7334: The UMTS MAC dissector could crash (wnpa-sec-2018-07)
  • CVE-2018-7337: The DOCSIS dissector could crash (wnpa-sec-2018-08)
  • CVE-2018-7336: The FCP dissector could crash (wnpa-sec-2018-09)
  • CVE-2018-7320: The SIGCOMP dissector could crash (wnpa-sec-2018-10)
  • CVE-2018-7420: The pcapng file parser could crash (wnpa-sec-2018-11)
  • CVE-2018-7417: The IPMI dissector could crash (wnpa-sec-2018-12)
  • CVE-2018-7418: The SIGCOMP dissector could crash (wnpa-sec-2018-13)
  • CVE-2018-7419: The NBAP disssector could crash (wnpa-sec-2018-14)
  • CVE-2017-17997: Misuse of NULL pointer in MRDISC dissector (bsc#1077080).
Record
SUSE-SU-2018:0811-1
Updated
2026-11-02
OSVSUSE-SU-2018:0867-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Security issue fixed (bsc#1082692):

  • CVE-2018-7335: The IEEE 802.11 dissector could crash (wnpa-sec-2018-05)
  • CVE-2018-7321: thrift long dissector loop (dissect_thrift_map)
  • CVE-2018-7322: DICOM: inifinite loop (dissect_dcm_tag)
  • CVE-2018-7323: WCCP: very long loop (dissect_wccp2_alternate_mask_value_set_element)
  • CVE-2018-7324: SCCP: infinite loop (dissect_sccp_optional_parameters)
  • CVE-2018-7325: RPKI-Router Protocol: infinite loop (dissect_rpkirtr_pdu)
  • CVE-2018-7326: LLTD: infinite loop (dissect_lltd_tlv)
  • CVE-2018-7327: openflow_v6: infinite loop (dissect_openflow_bundle_control_v6)
  • CVE-2018-7328: USB-DARWIN: long loop (dissect_darwin_usb_iso_transfer)
  • CVE-2018-7329: S7COMM: infinite loop (s7comm_decode_ud_cpu_alarm_main)
  • CVE-2018-7330: thread_meshcop: infinite loop (get_chancount)
  • CVE-2018-7331: GTP: infinite loop (dissect_gprscdr_GGSNPDPRecord, dissect_ber_set)
  • CVE-2018-7332: RELOAD: infinite loop (dissect_statans)
  • CVE-2018-7333: RPCoRDMA: infinite loop in get_write_list_chunk_count
  • CVE-2018-7421: Multiple dissectors could go into large infinite loops (wnpa-sec-2018-06)
  • CVE-2018-7334: The UMTS MAC dissector could crash (wnpa-sec-2018-07)
  • CVE-2018-7337: The DOCSIS dissector could crash (wnpa-sec-2018-08)
  • CVE-2018-7336: The FCP dissector could crash (wnpa-sec-2018-09)
  • CVE-2018-7320: The SIGCOMP dissector could crash (wnpa-sec-2018-10)
  • CVE-2018-7420: The pcapng file parser could crash (wnpa-sec-2018-11)
  • CVE-2018-7417: The IPMI dissector could crash (wnpa-sec-2018-12)
  • CVE-2018-7418: The SIGCOMP dissector could crash (wnpa-sec-2018-13)
  • CVE-2018-7419: The NBAP disssector could crash (wnpa-sec-2018-14)
  • CVE-2017-17997: Misuse of NULL pointer in MRDISC dissector (bsc#1077080).
Record
SUSE-SU-2018:0867-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wireshark
Alpine:v3.10
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.11
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.12
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.13
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.14
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.15
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.16
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.17
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.18
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.19
 2.2.0 up to 2.4.5-r0
2.4.5-r0
Show 30 moreShow less
Affected packages
PackageAffectedFixed
wireshark
Alpine:v3.20
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.21
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.22
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.23
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.24
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.6
 2.2.0 up to 2.2.15-r0
2.2.15-r0
wireshark
Alpine:v3.7
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.8
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Alpine:v3.9
 2.2.0 up to 2.4.5-r0
2.4.5-r0
wireshark
Debian:12
 before 2.4.5-1
2.4.5-1
wireshark
Debian:13
 before 2.4.5-1
2.4.5-1
wireshark
Debian:14
 before 2.4.5-1
2.4.5-1
wireshark
Debian:7
From an advisory covering 12 CVEs
 before 1.12.1+g01b65bf-4+deb8u6~deb7u10, plus listed versions
1.10.0-11.10.0-21.10.0-2~bpo70+11.10.0~rc1-11.10.0~rc2-1
Show 45 moreShow less
1.10.1-11.10.1-1~bpo70+11.10.2-11.10.2-1~bpo70+11.10.2-21.10.3-11.10.3-1~bpo70+11.10.4-11.10.5-11.10.5-1~bpo70+11.10.5-21.10.6-11.10.6-1~bpo70+11.10.7-11.10.7-1~bpo70+11.10.7-21.10.7-31.10.7-41.10.8-11.10.8-1~bpo70+11.12.0+git+4fab41a1-11.12.0~rc1-11.12.0~rc1-21.12.0~rc2+git+fd017ee+dfsg1-11.12.0~rc3+git+e14d5b6eaa+dfsg1-11.12.1+g01b65bf-11.12.1+g01b65bf-1~bpo70+11.12.1+g01b65bf-21.12.1+g01b65bf-2~bpo70+11.12.1+g01b65bf-31.12.1+g01b65bf-41.12.1+g01b65bf-4~bpo70+11.8.2-5wheezy101.8.2-5wheezy111.8.2-5wheezy121.8.2-5wheezy131.8.2-5wheezy141.8.2-5wheezy151.8.2-5wheezy15~deb6u11.8.2-5wheezy161.8.2-5wheezy16~deb6u11.8.2-5wheezy171.8.2-5wheezy181.8.2-5wheezy21.8.2-5wheezy3
1.12.1+g01b65bf-4+deb8u6~deb7u10
wireshark
Debian:8
From an advisory covering 41 CVEs
 before 1.12.1+g01b65bf-4+deb8u16, plus listed versions
1.12.1+g01b65bf-41.12.1+g01b65bf-4+deb8u11.12.1+g01b65bf-4+deb8u101.12.1+g01b65bf-4+deb8u111.12.1+g01b65bf-4+deb8u12
Show 22 moreShow less
1.12.1+g01b65bf-4+deb8u131.12.1+g01b65bf-4+deb8u141.12.1+g01b65bf-4+deb8u151.12.1+g01b65bf-4+deb8u21.12.1+g01b65bf-4+deb8u31.12.1+g01b65bf-4+deb8u41.12.1+g01b65bf-4+deb8u51.12.1+g01b65bf-4+deb8u61.12.1+g01b65bf-4+deb8u6~deb7u11.12.1+g01b65bf-4+deb8u6~deb7u101.12.1+g01b65bf-4+deb8u6~deb7u111.12.1+g01b65bf-4+deb8u6~deb7u21.12.1+g01b65bf-4+deb8u6~deb7u31.12.1+g01b65bf-4+deb8u6~deb7u41.12.1+g01b65bf-4+deb8u6~deb7u51.12.1+g01b65bf-4+deb8u6~deb7u61.12.1+g01b65bf-4+deb8u6~deb7u71.12.1+g01b65bf-4+deb8u6~deb7u81.12.1+g01b65bf-4+deb8u6~deb7u91.12.1+g01b65bf-4+deb8u71.12.1+g01b65bf-4+deb8u81.12.1+g01b65bf-4+deb8u9
1.12.1+g01b65bf-4+deb8u16
wireshark
Mageia:6
From an advisory covering 38 CVEs
 before 2.2.14-1.mga6
2.2.14-1.mga6
wireshark
SUSE:Linux Enterprise Desktop 12 SP2
From an advisory covering 24 CVEs
 before 2.2.13-48.21.1
2.2.13-48.21.1
wireshark
SUSE:Linux Enterprise Desktop 12 SP3
From an advisory covering 24 CVEs
 before 2.2.13-48.21.1
2.2.13-48.21.1
wireshark
SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2
From an advisory covering 24 CVEs
 before 2.2.13-48.21.1
2.2.13-48.21.1
wireshark
SUSE:Linux Enterprise Software Development Kit 12 SP2
From an advisory covering 24 CVEs
 before 2.2.13-48.21.1
2.2.13-48.21.1
wireshark
SUSE:Linux Enterprise Software Development Kit 12 SP3
From an advisory covering 24 CVEs
 before 2.2.13-48.21.1
2.2.13-48.21.1
wireshark
SUSE:Linux Enterprise Server 12 SP2
From an advisory covering 24 CVEs
 before 2.2.13-48.21.1
2.2.13-48.21.1
wireshark
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
From an advisory covering 24 CVEs
 before 2.2.13-48.21.1
2.2.13-48.21.1
wireshark
SUSE:Linux Enterprise Server 12 SP3
From an advisory covering 24 CVEs
 before 2.2.13-48.21.1
2.2.13-48.21.1
wireshark
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
From an advisory covering 24 CVEs
 before 2.2.13-48.21.1
2.2.13-48.21.1
wireshark
SUSE:Linux Enterprise Software Development Kit 11 SP4
From an advisory covering 24 CVEs
 before 2.2.13-40.22.1
2.2.13-40.22.1
wireshark
SUSE:Linux Enterprise Server 11 SP4
From an advisory covering 24 CVEs
 before 2.2.13-40.22.1
2.2.13-40.22.1
wireshark
SUSE:Linux Enterprise Server for SAP Applications 11 SP4
From an advisory covering 24 CVEs
 before 2.2.13-40.22.1
2.2.13-40.22.1
wireshark
Ubuntu:14.04:LTS
 before 2.6.3-1~ubuntu14.04.1, plus listed versions
1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-11.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.1
2.6.3-1~ubuntu14.04.1
wireshark
Ubuntu:16.04:LTS
 before 2.6.3-1~ubuntu16.04.1, plus listed versions
1.12.7+g7fc8978-11.12.8+g5b6e543-22.0.1+g59ea380-3build12.0.2+ga16e22e-12.2.6+g32dac6a-2ubuntu0.16.04
2.6.3-1~ubuntu16.04.1
wireshark
Ubuntu:18.04:LTS
 before 2.6.3-1~ubuntu18.04.1, plus listed versions
2.4.2-12.4.3-12.4.4-12.4.5-1
2.6.3-1~ubuntu18.04.1

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-7323 is a high vulnerability (CVSS 7.5) in Wireshark, published February 23, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.46%, the 84th percentile. Fixed in wireshark 2.4.5-r0.

References

Show 59 moreShow less
This page doesn't list everything

Left out here: 13 versions. The JSON record has them.

Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open